Android自定义进度框

最新推荐文章于 2024-03-16 15:39:42 发布

freeson_csdn

最新推荐文章于 2024-03-16 15:39:42 发布

阅读量493

点赞数

分类专栏： android 文章标签：自定义对话框属性动画

本文链接：https://blog.youkuaiyun.com/biaobiao1217/article/details/46982863

版权

android 专栏收录该内容

35 篇文章

订阅专栏

本文介绍了一种在Android应用中自定义加载对话框的方法，包括如何创建圆形旋转进度框并添加自定义Logo，同时提供了完整的代码示例及使用说明。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

有时候，为了适应项目中的统一风格，或者优化进度框的显示效果，我们需要定义自己的进度框显示效果，下面实现一种可添加自己Logo的圆形旋转进度框，代码如下：

1、自定义LoadingDialog类继承Dialog：

package com.example.loadingdialog.view;

import com.example.myloadingdialog.R;

import android.animation.ObjectAnimator;
import android.app.Dialog;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.LinearInterpolator;
import android.widget.ImageView;
import android.widget.RelativeLayout;

public class LoadingDialog extends Dialog {
	private ImageView mView;
	private Context mContext;
	private ObjectAnimator animator;
	/** 显示对话框 */
	private static final int DIALOG_SHOW = 1;
	/** 隐藏对话框 */
	private static final int DIALOG_DISMISS = 0;

	private Handler mHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case DIALOG_SHOW:
				LoadingDialog.super.show();
				break;
			case DIALOG_DISMISS:
				LoadingDialog.super.dismiss();
				break;
			}
		}
	};

	public LoadingDialog(Context context, int theme) {
		super(context, theme);
		mContext = context;

		RelativeLayout container = new RelativeLayout(mContext);
		container.setGravity(Gravity.CENTER);
		ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

		mView = new ImageView(context);
		ImageView iView = new ImageView(context);
		mView.setBackgroundResource(R.drawable.icon_loading);
		iView.setBackgroundResource(R.drawable.load_bk);
		RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
		params2.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
		container.addView(mView, params2);
		container.addView(iView, params2);

		setContentView(container, params);
		setCancelable(true);
		setCanceledOnTouchOutside(true);
		Window w = getWindow();
		WindowManager.LayoutParams lp = w.getAttributes();
		lp.width = LayoutParams.MATCH_PARENT;
	}

	@Override
	protected void onStart() {
		super.onStart();
		animator = ObjectAnimator.ofFloat(mView, "rotation", 0, 360f);
		animator.setRepeatCount(-1);
		animator.setDuration(800);
		animator.setInterpolator(new LinearInterpolator());
		animator.start();
	}

	@Override
	public void show() {
		mHandler.sendEmptyMessage(DIALOG_SHOW);
	}

	@Override
	public void dismiss() {
		mHandler.sendEmptyMessage(DIALOG_DISMISS);
	}
	
	@Override
	protected void onStop() {
		animator.end();
		super.onStop();
	}
}

注：代码中的两张图片R.drawable.icon_loading和R.drawable.load_bk可根据自己的需求随意替换。

2、在Activity中引用自定义对话框：

package com.example.loadingdialog;

import com.example.loadingdialog.view.LoadingDialog;
import com.example.myloadingdialog.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends Activity {
	private LoadingDialog dialog;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		dialog = new LoadingDialog(this, R.style.alertdialog_theme);
	}
	
	public void click(View v){
		dialog.show();
		new Thread(new Runnable() {
			@Override
			public void run() {
				try {
					Thread.sleep(10000);
					dialog.dismiss();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				
			}
		}).start();
		
	}

}

其中初始化自定义对话框时用到了一个自定义样式(res/values/styles.xml)：

<style name="alertdialog_theme" parent="@android:style/Theme.Dialog">
        <item name="android:windowIsFloating">true</item>
        <!-- 是否浮现在activity之上 -->
        <item name="android:windowIsTranslucent">true</item>
        <!-- 半透明 -->
        <item name="android:windowNoTitle">true</item>
        <!-- 无标题 -->
        <item name="android:windowBackground">@color/transparent</item>
        <!-- 背景透明 -->
        <item name="android:backgroundDimEnabled">true</item>
        <!-- 模糊 -->
    </style>

效果图如下：

点击下载项目源码