回收bitmap后的ImageView,activity死前的回调方法

1.回收bitmap后的ImageView

1.11

ImageView imageView1 = (ImageView)findViewById(R.id.imageView1);

bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

imageView1.setImageBitmap(bitmap);

bitmap.recycle();

imageView1 显示的内容为空........................,但不会抛异常

1.12

ImageView imageView1 = (ImageView)findViewById(R.id.imageView1);

bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

imageView1.setImageBitmap(bitmap);

imageView1.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

startActivity(new Intent(MainActivity.this, TwoActivity.class));

}

});

@Override

protected void onStop() {

super.onStop();

System.out.println("onStop");

bitmap.recycle();

}

当前activity再可见的时候，imageView1 显示的内容为空........................,但不会抛异常

2.activity死前的回调方法

2.11用户按后退键的时候触发的方法有=》onBackPressed，onPause，onStop，onDestroy

2.12 用户finish()该activity的时候触发的方法有=>onPause，onStop，onDestroy