Android导入出错是match_parent问题

本文介绍了一种在Android开发中遇到的常见问题:当从一台电脑复制项目到另一台电脑时,由于buildpath配置不同导致的布局显示异常。文中详细说明了如何通过将xml文件中的layout_width属性值从match_parent修改为fill_parent来解决这一问题。

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在Android培训时的电脑上写的工程在自己电脑上打开总是无法正常运行,总是说buildpath的问题。

 

找了半天的问题,原来是xml文件布局里面的layout_width中的match_parent问题,我使用ultraedit将所有的xml文件打开,全部的将match_parent替换成fill_parent,就好用了。

package com.videogo.ui.login; import android.content.res.Configuration; import android.content.pm.ActivityInfo; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import com.videogo.exception.BaseException; import com.videogo.exception.ErrorCode; import com.videogo.openapi.EZConstants; import com.videogo.openapi.EZOpenSDK; import com.videogo.openapi.EZPlayer; import ezviz.ezopensdk.R; import android.widget.ProgressBar; import android.widget.RelativeLayout; import android.widget.LinearLayout; import android.widget.ImageButton; import android.widget.Toast; import android.view.MotionEvent; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URLEncoder; import org.json.JSONObject; public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, Handler.Callback { private static final String TAG = "EZPreview"; private static final int MSG_VIDEO_SIZE_CHANGED = 1; private static final int MSG_REALPLAY_PLAY_SUCCESS = 2001; private static final int MSG_REALPLAY_PLAY_FAIL = 2002; private static final int MSG_SHOW_STREAM_TYPE = 3001; // 新增消息类型 private static final int DIRECTION_UP = 0; private static final int DIRECTION_DOWN = 1; private static final int DIRECTION_LEFT = 2; private static final int DIRECTION_RIGHT = 3; private static final int DIRECTION_ZOOM_IN = 8; // 物理放大 private static final int DIRECTION_ZOOM_OUT = 9; // 物理缩小 private static final int DIRECTION_FOCUS_NEAR = 10; // 调整近焦距 private static final int DIRECTION_FOCUS_FAR = 11; // 调整远焦距 private static final int SPEED_MEDIUM = 1; // 速度适中 private static final String PTZ_START_URL = "https://open.ys7.com/api/lapp/device/ptz/start"; private static final String PTZ_STOP_URL = "https://open.ys7.com/api/lapp/device/ptz/stop"; private boolean mIsSupportPTZ = false; // 设备是否支持云台 private ExecutorService mExecutorService; // 线程池 private volatile boolean isPTZActive = false; // 标记是否有云台操作正在进行 private volatile int activeDirection = -1; // 当前活动的方向 // 接收的参数键 private static final String KEY_APPKEY = "appkey"; private static final String KEY_SERIAL = "serial"; private static final String KEY_VERIFYCODE = "VerifyCode"; private static final String KEY_ACCESSTOKEN = "accessToken"; private static final String KEY_CAMERANO = "cameraNo"; private boolean mIsPlaying = false; private EZPlayer mEZPlayer; private SurfaceView mSurfaceView; private SurfaceHolder mSurfaceHolder; private ProgressBar mLiveProgressBar; private RelativeLayout mRlControl; private LinearLayout mLlHc; private ImageButton mIbRotate2; // 从Intent中获取的参数 private String mAppKey; private String mDeviceSerial; private String mVerifyCode; private String mAccessToken; private int mCameraNo = 0; // 默认通道号0 private Handler mHandler; private boolean mP2PEnabled = true; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activitymain); mHandler = new Handler(this); // 1. 从Intent中获取参数 extractParametersFromIntent(); // 2. 初始化UI initUI(); initOrientationSensitiveViews(); View fanHui = findViewById(R.id.back); fanHui.setOnClickListener(v -> finish()); // 3. 初始化SDK并创建播放器 initSDKAndCreatePlayer(); } private void initOrientationSensitiveViews() { mLiveProgressBar = findViewById(R.id.liveProgressBar); mRlControl = findViewById(R.id.rl_control); mLlHc = findViewById(R.id.ll_hc); mIbRotate2 = findViewById(R.id.ib_rotate2); // 初始状态显示加载 if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.VISIBLE); } // 初始根据方向更新UI updateLayoutByOrientation(); // 创建线程池 mExecutorService = Executors.newFixedThreadPool(2); // 4. 初始化云台控制按钮 initPTZButtons(); } private void initPTZButtons() { // 竖屏布局的按钮 setupPTZButton(R.id.ptz_left_btn, DIRECTION_LEFT); setupPTZButton(R.id.ptz_right_btn, DIRECTION_RIGHT); setupPTZButton(R.id.ptz_top_btn, DIRECTION_UP); setupPTZButton(R.id.ptz_bottom_btn, DIRECTION_DOWN); setupPTZButton(R.id.zoom_add, DIRECTION_ZOOM_IN); // 物理放大 setupPTZButton(R.id.zoom_reduce, DIRECTION_ZOOM_OUT); // 物理缩小 setupPTZButton(R.id.focus_add, DIRECTION_FOCUS_NEAR); // 近焦距 setupPTZButton(R.id.foucus_reduce, DIRECTION_FOCUS_FAR); // 远焦距 setupUnsupportedButton(R.id.guangquan_add, "光圈+"); setupUnsupportedButton(R.id.guangquan_reduce, "光圈-"); // 横屏布局的按钮 setupPTZButton(R.id.ptz_left_btn2, DIRECTION_LEFT); setupPTZButton(R.id.ptz_right_btn2, DIRECTION_RIGHT); setupPTZButton(R.id.ptz_top_btn2, DIRECTION_UP); setupPTZButton(R.id.ptz_bottom_btn2, DIRECTION_DOWN); setupPTZButton(R.id.zoom_add2, DIRECTION_ZOOM_IN); setupPTZButton(R.id.zoom_reduce2, DIRECTION_ZOOM_OUT); setupPTZButton(R.id.focus_add2, DIRECTION_FOCUS_NEAR); // 近焦距 setupPTZButton(R.id.foucus_reduce2, DIRECTION_FOCUS_FAR); // 远焦距 } private void setupUnsupportedButton(int buttonId, String buttonName) { ImageButton button = findViewById(buttonId); if (button != null) { button.setOnClickListener(v -> { Toast.makeText(MainActivity.this, "SDK不支持此功能", Toast.LENGTH_SHORT).show(); }); } } private void setupPTZButton(int buttonId, final int direction) { ImageButton button = findViewById(buttonId); if (button != null) { button.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: // 按下时开始云台动作 controlPTZ(direction, SPEED_MEDIUM, true); return true; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: // 如果这是当前活动的方向,则停止 if (isPTZActive && activeDirection == direction) { controlPTZ(direction, SPEED_MEDIUM, false); } return true; } return false; } }); } } // 云台控制方法 private void controlPTZ(final int direction, final int speed, final boolean isStart) { // 检查是否允许开始新操作 if (isStart && isPTZActive) { // runOnUiThread(() -> Toast.makeText(MainActivity.this, // "请先停止当前云台操作", Toast.LENGTH_SHORT).show()); return; } mExecutorService.execute(() -> { try { String urlStr = isStart ? PTZ_START_URL : PTZ_STOP_URL; URL url = new URL(urlStr); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setDoOutput(true); conn.setConnectTimeout(5000); conn.setReadTimeout(5000); // 构建POST数据 StringBuilder postData = new StringBuilder(); postData.append("accessToken=").append(URLEncoder.encode(mAccessToken, "UTF-8")); postData.append("&deviceSerial=").append(URLEncoder.encode(mDeviceSerial, "UTF-8")); postData.append("&channelNo=").append(mCameraNo); if (isStart) { postData.append("&direction=").append(direction); postData.append("&speed=").append(speed); } else { // 停止时带上方向参数(建议) postData.append("&direction=").append(direction); } // 发送请求 OutputStream os = conn.getOutputStream(); os.write(postData.toString().getBytes("UTF-8")); os.flush(); os.close(); // 处理响应 int responseCode = conn.getResponseCode(); if (responseCode == HttpURLConnection.HTTP_OK) { // 读取响应内容 InputStream is = conn.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(is)); StringBuilder response = new StringBuilder(); String line; while ((line = reader.readLine()) != null) { response.append(line); } reader.close(); // 解析JSON响应 JSONObject json = new JSONObject(response.toString()); String code = json.optString("code", "0"); String msg = json.optString("msg", "未知错误"); if ("200".equals(code)) { Log.d(TAG, "PTZ控制成功: " + (isStart ? "开始" : "停止") + " | 方向: " + direction); // 更新状态 if (isStart) { isPTZActive = true; activeDirection = direction; } else { isPTZActive = false; activeDirection = -1; } } else { handlePTZError(code, msg, isStart); } } else { Log.e(TAG, "HTTP错误: " + responseCode); runOnUiThread(() -> Toast.makeText(MainActivity.this, "网络请求失败: " + responseCode, Toast.LENGTH_SHORT).show()); } conn.disconnect(); } catch (Exception e) { Log.e(TAG, "PTZ控制异常", e); runOnUiThread(() -> Toast.makeText(MainActivity.this, "云台控制出错: " + e.getMessage(), Toast.LENGTH_SHORT).show()); } }); } private void handlePTZError(String code, String msg, boolean isStart) { String errorMessage = msg; // 根据文档映射错误信息 switch (code) { case "10001": errorMessage = "参数错误"; break; case "10002": errorMessage = "accessToken异常或过期"; break; case "20002": errorMessage = "设备不存在"; break; case "20007": errorMessage = "设备不在线"; break; case "60000": errorMessage = "设备不支持云台控制"; mIsSupportPTZ = false; // 更新设备支持状态 break; case "60001": errorMessage = "用户无云台控制权限"; break; case "60020": errorMessage = "不支持该命令"; break; // 添加其他错误码处理... } final String finalMsg = errorMessage; runOnUiThread(() -> { Toast.makeText(MainActivity.this, (isStart ? "开始" : "停止") + "云台控制失败: " + finalMsg, Toast.LENGTH_LONG).show(); // 对于特定错误,重置云台状态 if ("10002".equals(code) || "60000".equals(code)) { isPTZActive = false; activeDirection = -1; } }); } @Override public void onConfigurationChanged(@NonNull Configuration newConfig) { super.onConfigurationChanged(newConfig); // 方向变化时重新初始化视图 initOrientationSensitiveViews(); updateLayoutByOrientation(); } @Override protected void onResume() { super.onResume(); if (mLiveProgressBar != null) { if (mIsPlaying) { mLiveProgressBar.setVisibility(View.GONE); } else { mLiveProgressBar.setVisibility(View.VISIBLE); } } } private void updateLayoutByOrientation() { int orientation = getResources().getConfiguration().orientation; if (orientation == Configuration.ORIENTATION_PORTRAIT) { // 竖屏模式 mRlControl.setVisibility(View.VISIBLE); mLlHc.setVisibility(View.GONE); mIbRotate2.setVisibility(View.GONE); } else { // 横屏模式 mRlControl.setVisibility(View.GONE); mLlHc.setVisibility(View.VISIBLE); mIbRotate2.setVisibility(View.VISIBLE); } } /** * 从Intent中提取传递的参数 */ private void extractParametersFromIntent() { Bundle extras = getIntent().getExtras(); if (extras != null) { mAppKey = extras.getString(KEY_APPKEY, ""); mDeviceSerial = extras.getString(KEY_SERIAL, ""); mVerifyCode = extras.getString(KEY_VERIFYCODE, ""); mAccessToken = extras.getString(KEY_ACCESSTOKEN, ""); mCameraNo = extras.getInt(KEY_CAMERANO, 0); Log.d(TAG, "Received parameters:"); Log.d(TAG, "AppKey: " + mAppKey); Log.d(TAG, "DeviceSerial: " + mDeviceSerial); Log.d(TAG, "VerifyCode: " + mVerifyCode); Log.d(TAG, "AccessToken: " + mAccessToken); Log.d(TAG, "CameraNo: " + mCameraNo); } else { Log.e(TAG, "No parameters received from intent"); // 如果没有参数,可以显示错误信息并退出 finish(); } } /** * 初始化UI组件 */ private void initUI() { mSurfaceView = findViewById(R.id.realplay_sv); if (mSurfaceView != null) { mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.addCallback(this); } else { Log.e(TAG, "SurfaceView not found with ID realplay_sv"); } } /** * 初始化SDK并创建播放器 */ private void initSDKAndCreatePlayer() { try { // 1. 初始化SDK EZOpenSDK.initLib(getApplication(), mAppKey); EZOpenSDK.getInstance().setAccessToken(mAccessToken); // +++ 开启P2P取流方式 +++ EZOpenSDK.enableP2P(true); // 开启P2P取流 Log.d(TAG, "P2P取流已启用"); mP2PEnabled = true; // 2. 创建播放器 createPlayer(); } catch (Exception e) { Log.e(TAG, "SDK初始化失败", e); Toast.makeText(this, "SDK初始化失败", Toast.LENGTH_SHORT).show(); } } /** * 创建播放器并开始播放 */ private void createPlayer() { try { // 1. 创建播放器实例 mEZPlayer = EZOpenSDK.getInstance().createPlayer(mDeviceSerial, mCameraNo); // 2. 配置播放器 mEZPlayer.setHandler(mHandler); if (mSurfaceHolder != null) { mEZPlayer.setSurfaceHold(mSurfaceHolder); } if (mVerifyCode != null && !mVerifyCode.isEmpty()) { mEZPlayer.setPlayVerifyCode(mVerifyCode); } // 3. 开始播放 mEZPlayer.startRealPlay(); mIsPlaying = true; // 标记为正在播放 } catch (Exception e) { Log.e(TAG, "Player creation failed", e); mIsPlaying = false; // 标记为未播放 } } // 处理屏幕旋转按钮点击 public void changeScreen(View view) { Log.d(TAG, "Change screen orientation requested"); int currentOrientation = getResources().getConfiguration().orientation; if (currentOrientation == Configuration.ORIENTATION_PORTRAIT) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } else { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); } // 更新UI布局 updateLayoutByOrientation(); } // Surface回调接口实现 @Override public void surfaceCreated(@NonNull SurfaceHolder holder) { if (mEZPlayer != null) { mEZPlayer.setSurfaceHold(holder); } } @Override public void surfaceChanged(@NonNull SurfaceHolder holder, int format, int width, int height) {} @Override public void surfaceDestroyed(@NonNull SurfaceHolder holder) { if (mEZPlayer != null) { mEZPlayer.setSurfaceHold(null); } } @Override protected void onStop() { super.onStop(); if (mEZPlayer != null) { mEZPlayer.stopRealPlay(); mIsPlaying = false; // 标记为已停止 } } // Handler回调处理播放状态 @Override public boolean handleMessage(@NonNull Message msg) { Log.d(TAG, "handleMessage: " + msg.what); switch (msg.what) { case MSG_VIDEO_SIZE_CHANGED: break; case MSG_REALPLAY_PLAY_SUCCESS: Log.i(TAG, "播放成功"); mIsPlaying = true; // 获取并显示取流方式 int streamType = mEZPlayer.getStreamFetchType(); String streamTypeName = getStreamTypeName(streamType); Log.d(TAG, "当前取流方式: " + streamTypeName); // 发送消息显示取流方式 Message showMsg = new Message(); showMsg.what = MSG_SHOW_STREAM_TYPE; showMsg.obj = streamTypeName; mHandler.sendMessage(showMsg); runOnUiThread(() -> { if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.GONE); } }); // 在播放成功后检查设备是否支持云台 checkDevicePTZSupport(); break; case MSG_REALPLAY_PLAY_FAIL: Log.e(TAG, "播放失败"); mIsPlaying = false; runOnUiThread(() -> { if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.VISIBLE); } }); BaseException error = (BaseException) msg.obj; int errorCode = error.getErrorCode(); if (errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_NEED || errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_ERROR) { mVerifyCode = "123456"; if (mEZPlayer != null) { mEZPlayer.setPlayVerifyCode(mVerifyCode); mEZPlayer.startRealPlay(); } } else { Log.e(TAG, "播放失败,错误码: " + errorCode); } break; case MSG_SHOW_STREAM_TYPE: String type = (String) msg.obj; Toast.makeText(MainActivity.this, "取流方式: " + type + (mP2PEnabled ? " (P2P已启用)" : ""), Toast.LENGTH_LONG).show(); break; } return true; } private void checkDevicePTZSupport() { new Thread(() -> { try { // 这里使用SDK方法检查设备能力 // 如果SDK没有提供方法,可以使用HTTP API查询设备能力 // 简化处理:假设所有设备都支持云台 mIsSupportPTZ = true; // 实际项目中应该查询设备能力 // mIsSupportPTZ = queryDevicePTZCapability(); } catch (Exception e) { Log.e(TAG, "Failed to check PTZ support", e); } }).start(); } @Override protected void onDestroy() { super.onDestroy(); if (mExecutorService != null) { mExecutorService.shutdown(); } // +++移除Handler回调避免内存泄漏 +++ if (mHandler != null) { mHandler.removeCallbacksAndMessages(null); } if (mEZPlayer != null) { mEZPlayer.release(); mEZPlayer = null; } } private String getStreamTypeName(int type) { switch (type) { case 0: return "流媒体"; case 1: return "P2P"; case 2: return "内网直连"; case 4: return "云存储"; default: return "未知(" + type + ")"; } } } activity.main:<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#fff2f2f2" tools:context="com.videogo.ui.login.MainActivity"> <RelativeLayout android:id="@+id/ra_title" android:layout_width="match_parent" android:layout_height="44dp" android:background="@mipmap/title_bg"> <TextView android:id="@+id/titlename" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_gravity="center" android:text="易丰视频监控" android:textColor="@android:color/white" android:textSize="18sp" /> <ImageButton android:id="@+id/back" android:layout_width="40dp" android:layout_height="match_parent" android:background="@null" android:contentDescription="@null" android:paddingLeft="10dp" android:src="@mipmap/img_back" /> <Button android:id="@+id/huifang" android:layout_width="50dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:layout_marginRight="65dp" android:background="@drawable/gps_select" android:contentDescription="@null" android:scaleType="centerInside" android:src="@mipmap/ic_size_sel" android:text="回放" android:textColor="@color/white" android:textSize="18sp" /> <ImageButton android:id="@+id/ib_rotate" android:layout_width="50dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:layout_marginRight="6dp" android:background="@drawable/gps_select" android:contentDescription="@null" android:onClick="changeScreen" android:scaleType="centerInside" android:src="@mipmap/ic_size_sel" /> </RelativeLayout> <RelativeLayout android:id="@+id/rl_control" android:layout_width="match_parent" android:layout_height="266dp" android:layout_alignParentBottom="true" android:visibility="visible"> <LinearLayout android:id="@+id/ll_center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_centerHorizontal="true" android:background="@mipmap/ycjk_yp" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:id="@+id/left_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> <ImageButton android:id="@+id/ptz_top_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_up" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:id="@+id/right_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="match_parent"> <ImageButton android:id="@+id/ptz_left_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_left" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_zj" /> <ImageButton android:id="@+id/ptz_right_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_right" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:id="@+id/left_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> <ImageButton android:id="@+id/ptz_bottom_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_down" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:id="@+id/right_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toLeftOf="@id/ll_center" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/focus_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="焦距 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/guangquan_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more3" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="光圈 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/zoom_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more5" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="变倍 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toRightOf="@id/ll_center" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/foucus_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more2" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="焦距 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/guangquan_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more4" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="光圈 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/zoom_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more6" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="变倍 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_above="@id/rl_control" android:layout_below="@id/ra_title" android:layout_width="match_parent" android:layout_height="match_parent" > <SurfaceView android:id="@+id/realplay_sv" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" /> <ImageButton android:id="@+id/ib_rotate2" android:layout_width="40dp" android:layout_height="40dp" android:layout_alignParentLeft="true" android:layout_marginLeft="3dp" android:background="@color/green" android:contentDescription="@null" android:onClick="changeScreen" android:visibility="gone" android:src="@mipmap/img_systems_close" /> <ProgressBar android:id="@+id/liveProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:visibility="visible" /> <LinearLayout android:id="@+id/ll_hc" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:visibility="gone"> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_top_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_up" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_bottom_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_down" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_left_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_left" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_right_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_right" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/focus_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more1" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/foucus_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more2" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more5" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more6" /> </LinearLayout> </LinearLayout> </RelativeLayout> </RelativeLayout> 在代码中设置点击android:id="@+id/huifang"按钮页面跳转到FanHui.java.
最新发布
06-25
<think>我们有一个按钮,其id为`huifang`,当点击这个按钮时,我们希望跳转到另一个Activity(FanHui.java)。步骤:1.在MainActivity中找到该按钮。2.设置点击监听器。3.在监听器中,使用Intent跳转到FanHui这个Activity。注意:我们需要确保在AndroidManifest.xml中已经注册了FanHui这个Activity。修改MainActivity的onCreate方法,在初始化UI后设置按钮的点击事件。</think>要实现点击"回放"按钮(id: huifang)跳转到FanHui.java页面,您需要完成以下步骤: ### 1. 创建FanHui.java活动 首先创建回放页面活动: ```java // FanHui.java package com.videogo.ui.login; import android.os.Bundle; import androidx.appcompat.app.AppCompatActivity; public class FanHui extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fanhui); // 假设布局文件名为activity_fanhui.xml } } ``` ### 2. 在AndroidManifest.xml中注册活动 在`AndroidManifest.xml`中添加FanHui活动的声明: ```xml <application> <!-- 其他活动声明 --> <activity android:name=".FanHui" android:label="回放页面"/> </application> ``` ### 3. 修改MainActivity.java 在MainActivity中添加跳转逻辑: ```java // 在MainActivity的onCreate方法中添加 Button huifangBtn = findViewById(R.id.huifang); huifangBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 创建Intent跳转到FanHui活动 Intent intent = new Intent(MainActivity.this, FanHui.class); // 传递必要参数(可选) intent.putExtra("deviceSerial", mDeviceSerial); intent.putExtra("cameraNo", mCameraNo); intent.putExtra("accessToken", mAccessToken); startActivity(intent); } }); ``` ### 4. 完整修改后的MainActivity部分代码 ```java // 在导入部分添加 import android.content.Intent; import android.widget.Button; public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, Handler.Callback { // ... 现有代码保持不变 ... @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activitymain); mHandler = new Handler(this); // 1. 从Intent中获取参数 extractParametersFromIntent(); // 2. 初始化UI initUI(); initOrientationSensitiveViews(); // 3. 设置返回按钮 View fanHui = findViewById(R.id.back); fanHui.setOnClickListener(v -> finish()); // 4. 设置回放按钮 Button huifangBtn = findViewById(R.id.huifang); huifangBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 创建Intent跳转到FanHui活动 Intent intent = new Intent(MainActivity.this, FanHui.class); // 传递必要参数 intent.putExtra("deviceSerial", mDeviceSerial); intent.putExtra("cameraNo", mCameraNo); intent.putExtra("accessToken", mAccessToken); startActivity(intent); } }); // 5. 初始化SDK并创建播放器 initSDKAndCreatePlayer(); } // ... 其他代码保持不变 ... } ``` ### 5. 在FanHui.java中接收参数(可选) 如果您传递了参数,可以在FanHui活动中接收: ```java public class FanHui extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fanhui); // 接收传递的参数 Intent intent = getIntent(); String deviceSerial = intent.getStringExtra("deviceSerial"); int cameraNo = intent.getIntExtra("cameraNo", 0); String accessToken = intent.getStringExtra("accessToken"); // 使用参数初始化回放功能 // ... } } ``` ### 6. 创建回放页面布局 创建`res/layout/activity_fanhui.xml`布局文件: ```xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#fff2f2f2"> <!-- 回放页面标题栏 --> <RelativeLayout android:id="@+id/ra_title" android:layout_width="match_parent" android:layout_height="44dp" android:background="@mipmap/title_bg"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="录像回放" android:textColor="@android:color/white" android:textSize="18sp" /> <ImageButton android:id="@+id/back" android:layout_width="40dp" android:layout_height="match_parent" android:background="@null" android:contentDescription="@null" android:paddingLeft="10dp" android:src="@mipmap/img_back" android:onClick="onBackPressed"/> </RelativeLayout> <!-- 回放内容区域 --> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/ra_title" android:orientation="vertical" android:padding="16dp"> <!-- 这里添加回放功能的具体UI组件 --> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="回放功能将在这里显示" android:textSize="18sp"/> <!-- 可以添加日期选择器、时间轴、播放控制按钮等 --> </LinearLayout> </RelativeLayout> ``` ### 关键点说明 1. **Intent跳转**: ```java Intent intent = new Intent(MainActivity.this, FanHui.class); startActivity(intent); ``` 2. **参数传递**: ```java // 传递参数 intent.putExtra("deviceSerial", mDeviceSerial); // 接收参数 String deviceSerial = getIntent().getStringExtra("deviceSerial"); ``` 3. **按钮事件处理**: ```java huifangBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 跳转逻辑 } }); ``` 4. **返回按钮处理**: ```xml android:onClick="onBackPressed" ``` ### 完整实现后的MainActivity类结构 ```java public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, Handler.Callback { // 现有成员变量 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activitymain); // 初始化代码... // 设置回放按钮点击事件 Button huifangBtn = findViewById(R.id.huifang); huifangBtn.setOnClickListener(v -> { Intent intent = new Intent(MainActivity.this, FanHui.class); intent.putExtra("deviceSerial", mDeviceSerial); intent.putExtra("cameraNo", mCameraNo); intent.putExtra("accessToken", mAccessToken); startActivity(intent); }); // 其他初始化代码... } // 其他方法... } ``` ### 注意事项 1. **布局文件**: - 确保创建了`activity_fanhui.xml`布局文件 - 回放页面应该有返回按钮或导航功能 2. **参数传递**: - 传递设备序列号、通道号和访问令牌等必要参数 - 回放功能需要这些参数来加载录像 3. **资源管理**: - 在播放器活动暂停时释放资源 - 在回放活动返回时恢复播放 4. **用户界面**: - 回放页面应该包含时间选择器 - 添加播放/暂停、快进/快退等控制按钮 - 显示录像时间轴 这样实现后,点击"回放"按钮将跳转到新的FanHui活动,并传递必要的设备信息用于加载录像回放。
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