用画布使位图可单击。
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希望这是完成我的应用程序的最后一步。我需要在可单击的画布内创建一个位图，该位图将调用将要播放视频（mp4）的新活动，或者在当前活动中将其播放视频。
显示画布和位图的类是我反复使用的类，用于显示缩略图的完整图像。图片ID是通过Intent传递的。这是完整图像活动的代码（我是一个菜鸟，使用此站点和其他站点一次将我的代码拼凑在一起，因此如果不干净，我深表歉意）：
public class full_image extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(new BitmapView(this));
getWindow().setBackgroundDrawableResource(R.drawable.bground);
getWindow().setWindowAnimations(0);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
class BitmapView extends View {
public BitmapView(Context context) {
super(context);
}
@Override
public void onDraw(Canvas canvas) {
int imgid = getIntent().getIntExtra(\"Full\",0);
Bitmap fullimage = BitmapFactory.decodeResource(getResources(),imgid);
Bitmap playButton = BitmapFactory.decodeResource(getResources(), R.drawable.bt_play); //Added for Video
Display display = getWindowManager().getDefaultDisplay();
int fpWidth = fullimage.getWidth();
int fpHeight = fullimage.getHeight();
int playWidth = playButton.getWidth();
int playHeight = playButton.getHeight();
int screenWidth = display.getWidth();
int screenHeight = display.getHeight();
int leftPoint = screenWidth/2 - fpWidth/2;
int topPoint = screenHeight/2 - fpHeight/2;
int leftPlayPoint = screenWidth/2 - playWidth/2;
int topPlayPoint = screenHeight/2 - playHeight/2;
canvas.drawBitmap(fullimage,leftPoint,topPoint,null);
canvas.drawBitmap(playButton,leftPlayPoint,topPlayPoint,null);
}
}
}
public boolean onTouchEvent(MotionEvent event){
int action = event.getAction();
int x = event.getX() // or getRawX();
int y = event.getY();
switch(action){
case MotionEvent.ACTION_DOWN:
if (x >= xOfYourBitmap && x < (xOfYourBitmap + yourBitmap.getWidth())
&& y >= yOfYourBitmap && y < (yOfYourBitmap + yourBitmap.getHeight())) {
//tada, if this is true, you\'ve started your click inside your bitmap
}
break;
}
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骂狮淋唐便
if (x >= xOfYourBitmap && x < (xOfYourBitmap + yourBitmap.getWidth()) && y >= yOfYourBitmap && y < (yOfYourBitmap + yourBitmap.getHeight())) { //tada, if this is true, you\'ve started your click inside your bitmap }