智能车从入坑到弃坑1 移动控制端 创建两个activity

创建一个新的项目空的activity

manifest.xml

<activity
            android:name=".MainActivity"
            android:exported="true"
            android:screenOrientation="landscape">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity
            android:name=".MainActivity2"
            android:exported="true"
            android:screenOrientation="landscape" />

注册新的activity，横屏

mianactivity.java

package com.example.myapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.WindowManager;

import com.example.myapp.services.myUdpService;

public class MainActivity extends AppCompatActivity {

    protected GestureDetector mGestureDetector;
    private Intent mIntent; // 声明一个意图对象
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        initView();
        initService();
    }


    private void initView(){
        mGestureDetector = new GestureDetector(new GestureDetector.SimpleOnGestureListener(){
            //当手指在屏幕上滑动的时候 调用的方法.
            @Override
            //e1代表的是手指刚开始滑动的事件，e2代表手指滑动完了的事件
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                if(e1.getRawX() - e2.getRawX() > 200){
                    showNext();//向右滑动，显示下一个界面
                    return true;
                }

                if(e2.getRawX() - e1.getRawX() > 200){
                    showPre();//向左滑动，显示上一个界面
                    return true;
                }
                return super.onFling(e1, e2, velocityX, velocityY);
            }
        });
    }

    private void initService(){
        mIntent = new Intent(this, myUdpService.class);
        startService(mIntent); // 启动指定意图的服务
    }


    //2.让手势识别器生效，重写Activity的触摸事件，并且将Activity的触摸事件传入到手势识别器中
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        mGestureDetector.onTouchEvent(event);
        return super.onTouchEvent(event);
    }


    public void showNext() {
        Intent intent = new Intent(this,MainActivity2.class);
        startActivity(intent);
        finish();
        //调用此方法让动画效果生效
        overridePendingTransition(R.anim.tran_next_in, R.anim.tran_next_out);
    }

    public void showPre() {
        /*
        Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
        finish();
        overridePendingTransition(R.anim.tran_pre_in, R.anim.tran_pre_out);
    */
    }
}

mainactivity2.java

package com.example.myapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.WindowManager;

public class MainActivity2 extends AppCompatActivity {

    protected GestureDetector mGestureDetector;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        mGestureDetector = new GestureDetector(new GestureDetector.SimpleOnGestureListener(){
            //当手指在屏幕上滑动的时候 调用的方法.
            @Override
            //e1代表的是手指刚开始滑动的事件，e2代表手指滑动完了的事件
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                if(e1.getRawX() - e2.getRawX() > 200){
                    showNext();//向右滑动，显示下一个界面
                    return true;
                }

                if(e2.getRawX() - e1.getRawX() > 200){
                    showPre();//向左滑动，显示上一个界面
                    return true;
                }
                return super.onFling(e1, e2, velocityX, velocityY);
            }
        });
    }

    //2.让手势识别器生效，重写Activity的触摸事件，并且将Activity的触摸事件传入到手势识别器中
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        mGestureDetector.onTouchEvent(event);
        return super.onTouchEvent(event);
    }


    public void showNext() {

    }

    public void showPre() {
        Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
        finish();
        overridePendingTransition(R.anim.tran_pre_in, R.anim.tran_pre_out);
    }
}

tran_next_in.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="100%p"
    android:toXDelta="0"
    android:fromYDelta="0"
    android:toYDelta="0"
    android:duration="300">
</translate>

tran_next_out.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="0"
    android:toXDelta="-100%p"
    android:fromYDelta="0"
    android:toYDelta="0"
    android:duration="300">
</translate>

tran_pre_in.xml

<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="-100%p"
    android:toXDelta="0"
    android:fromYDelta="0"
    android:toYDelta="0"
    android:duration="300">
</translate>

tran_pre_out.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="0"
    android:toXDelta="100%p"
    android:fromYDelta="0"
    android:toYDelta="0"
    android:duration="300">
</translate>