Android 双屏双触摸 测试apk 测试RK3399主板 双屏双触摸

改Demo用于测试双屏输出的Android主板验证支不支持双屏双触摸
MainActivity.Java

public class MainActivity extends AppCompatActivity {

    DisplayManager mDisplayManager;
    SecondDisplay mPresentation;

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (Settings.canDrawOverlays(this)){
            showSecondDisplay();
        }else {
            showPermissionDialog();
        }
    }

    private void showPermissionDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("请选择允许出现在其他应用上");
        builder.setMessage("请选择允许出现在其他应用上");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @RequiresApi(api = Build.VERSION_CODES.M)
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
                intent.setData(Uri.parse("package:"+ getPackageName()));
                startActivityForResult(intent, 100);
            }
        });
        builder.create().show();
    }

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 100){
            if (Settings.canDrawOverlays(this)){
                showSecondDisplay();
            }else {
                showPermissionDialog();
            }
        }
    }

    private void showSecondDisplay() {
        mDisplayManager = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
        assert mDisplayManager != null;
        Display[] displays = mDisplayManager.getDisplays();
        Log.d("Dispalys:", Arrays.toString(displays));
        if (mPresentation == null){
            mPresentation = new SecondDisplay(this,displays[displays.length-1]);
            mPresentation.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
            mPresentation.show();
        }
    }
}

第二个屏幕弹框
SecondDisplay.java

package com.senjucao.doublescreendoubletouch;

import android.app.Presentation;
import android.content.Context;
import android.os.Bundle;
import android.view.Display;

public class SecondDisplay extends Presentation {
    Context context;
    public SecondDisplay(Context outerContext, Display display) {
        super(outerContext, display);
        this.context = outerContext;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_display);

    }

}

自定义的DrawView，按下画线：

public class DrawView extends View {
    private static final String TAG = "OnDraw";

    private Canvas canvas;
    private Paint paint;
    private Bitmap bitmap;

    private float[] startX = new float[20];
    private float[] startY = new float[20];
    private float[] endX = new float[20];
    private float[] endY = new float[20];

    private int width;
    private int height;

    public DrawView(Context context) {
        super(context);

        paint = new Paint(Paint.DITHER_FLAG);

        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth(10);
        paint.setColor(Color.RED);
        paint.setAntiAlias(true);
        paint.setDither(true);
        paint.setStrokeJoin(Paint.Join.ROUND);
        paint.setStrokeCap(Paint.Cap.ROUND);
    }

    public DrawView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        this(context);
    }

    public DrawView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        this(context);
    }

    public DrawView(Context context, @Nullable AttributeSet attrs) {
        this(context);
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
        width = getWidth();
        height = getHeight();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if (bitmap == null) return;
        canvas.drawBitmap(bitmap, 0, 0, null);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {

        if (bitmap == null || canvas == null){
            if (width==0||height ==0) return false;
            bitmap = Bitmap.createBitmap(width,height, Bitmap.Config.ARGB_8888);
            canvas = new Canvas(bitmap);
        }

        int action = event.getAction() & MotionEvent.ACTION_MASK;
        int index = (event.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK)
                >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
        switch (action) {
            case MotionEvent.ACTION_DOWN:
                Log.d(TAG, "第一个手指按下");
                canvas.drawColor(0, PorterDuff.Mode.CLEAR);
                for (int i = 0; i < event.getPointerCount(); i++) {
                    startX[i] = event.getX(i);
                    startY[i] = event.getY(i);
                    canvas.drawPoint(startX[i], startY[i], paint);
                }
                break;
            case MotionEvent.ACTION_POINTER_DOWN:
                Log.d(TAG, "第" + (index + 1) + "个手指按下");
                canvas.drawColor(0, PorterDuff.Mode.CLEAR);
                for (int i = 0; i < event.getPointerCount(); i++) {
                    startX[i] = event.getX(i);
                    startY[i] = event.getY(i);
                    canvas.drawPoint(startX[i], startY[i], paint);
                }
                break;
            case MotionEvent.ACTION_MOVE:
                for (int i = 0; i < event.getPointerCount(); i++) {
                    int pointerId = event.getPointerId(i);
                    Log.d(TAG, "pointerIndex=" + i + ",pointerId = " + pointerId);
                    endX[pointerId] = event.getX(i);
                    endY[pointerId] = event.getY(i);
                    canvas.drawLine(startX[pointerId], startY[pointerId], endX[pointerId]
                            , endY[pointerId], paint);
                    startX[pointerId] = endX[pointerId];
                    startY[pointerId] = endY[pointerId];
                }
                break;
            case MotionEvent.ACTION_UP:
                Log.d(TAG, "MotionEvent.ACTION_UP");
                break;
        }
        invalidate();
        return true;
    }
}

添加View到两个布局文件。

测试截图：
另外一个屏幕截不了，只能拍照

device-2019-12-20-161726.png