这篇文章主要介绍“Android怎么设置重复文字水印背景”的相关知识，小编通过实际案例向大家展示操作过程，操作方法简单快捷，实用性强，希望这篇“Android怎么设置重复文字水印背景”文章能帮助大家解决问题。
效果如图：
自定义Drawable ：
/**
* Created by Owen Chan
* On 2017-07-05.
*/
public class WaterMarkBg extends Drawable {
private Paint paint = new Paint();
private String logo = "SoYoung";
public WaterMarkBg(String logo) {
this.logo = logo;
}
@Override
public void draw(@NonNull Canvas canvas) {
int width = getBounds().right;
int height = getBounds().bottom;
canvas.drawColor(Color.parseColor("#F3F5F9"));
paint.setColor(Color.parseColor("#AEAEAE"));
paint.setAntiAlias(true);
paint.setTextSize(30);
canvas.save();
canvas.rotate(-30);
float textWidth = paint.measureText(logo);
int index = 0;
for (int positionY = height / 10; positionY <= height; positionY += height / 10) {
float fromX = -width + (index++ % 2) * textWidth;
for (float positionX = fromX; positionX < width; positionX += textWidth * 2) {
canvas.drawText(logo, positionX, positionY, paint);
}
}
canvas.restore();
}
@Override
public void setAlpha(@IntRange(from = 0, to = 255) int alpha) {
}
@Override
public void setColorFilter(@Nullable ColorFilter colorFilter) {
}
@Override
public int getOpacity() {
return PixelFormat.UNKNOWN;
}
}
代码中的设置：
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.text).setBackground(new WaterMarkBg("Owen Chan"));
}
}
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