Bitmap缩放(三)

质量压缩

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ImageView imageView = findViewById(R.id.image);

        Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.icon12);
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        bm.compress(Bitmap.CompressFormat.JPEG, 100,bos);//会出现红线但可以运行
        byte[] bytes = bos.toByteArray();
        Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
        imageView.setImageBitmap(bitmap);
    }

}