import android.os.Bundle;        import android.widget.ImageView;        import android.app.Activity;        import android.graphics.Bitmap;        import android.graphics.Canvas;        import android.graphics.Color;        import android.graphics.Paint;        import android.graphics.drawable.BitmapDrawable;        import android.graphics.drawable.Drawable;                public class MainActivity extends Activity {                    @Override            protected void onCreate(Bundle savedInstanceState) {                super.onCreate(savedInstanceState);                setContentView(R.layout.activity_main);                        ImageView iv = (ImageView) findViewById(R.id.imageView);                        //为简单期间，就使用Android原生的小机器人为目标图片                Drawable drawable = getResources().getDrawable(R.drawable.ic_launcher);                        // Drawable -> Bitmap：Drawable 转换成 Bitmap。                BitmapDrawable bd = (BitmapDrawable) drawable;                Bitmap bmp = bd.getBitmap();                        // 为Bitmap添加水印                Bitmap bitmap = createWatermark(bmp, "@ Zhang Phil");                        iv.setImageBitmap(bitmap);            }                    // 为图片target添加水印文字            // Bitmap target：被添加水印的图片            // String mark：水印文章            private Bitmap createWatermark(Bitmap target, String mark) {                int w = target.getWidth();                int h = target.getHeight();                        Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);                Canvas canvas = new Canvas(bmp);                        Paint p = new Paint();                        // 水印的颜色                p.setColor(Color.RED);                        // 水印的字体大小                p.setTextSize(10);                        p.setAntiAlias(true);// 去锯齿                        canvas.drawBitmap(target, 0, 0, p);                        // 在左边的中间位置开始添加水印                canvas.drawText(mark, 0, h / 2, p);                        canvas.save(Canvas.ALL_SAVE_FLAG);                canvas.restore();                        return bmp;            }        }