添加水印的方法挺简单的,具体内容如下 public class MainActivity extends AppCompatActivity { @Override
添加水印的方法挺简单的,具体内容如下
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView iv = (ImageView) findViewById(R.id.imageView);
Drawable drawable = ContextCompat.getDrawable(this, R.drawable.image);
BitmapDrawable bd = (BitmapDrawable) drawable;
Bitmap bmp = bd.getBitmap();
Bitmap bitmap = createWatermark(bmp, "叶应是叶" + "Http://blog.csdn.net/new_one_object");
iv.setImageBitmap(bitmap);
}
private Bitmap createWatermark(Bitmap bitmap, String mark) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
canvas canvas = new Canvas(bmp);
Paint p = new Paint();
// 水印颜色
p.setColor(Color.parseColor("#c5576370"));
// 水印字体大小
p.setTextSize(150);
//抗锯齿
p.setAntiAlias(true);
//绘制图像
canvas.drawBitmap(bitmap, 0, 0, p);
//绘制文字
canvas.drawText(mark, 0, h / 2, p);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
return bmp;
}
}
效果图
--结束END--
本文标题: Android实现为图片添加水印
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