WaterMarkManager

implementation 'me.luzhuo.java.android:lib_core:1.0.38-SNAPSHOT'
implementation 'com.google.android.material:material:1.2.1'

public class MainActivity extends AppCompatActivity {
    private WaterMarkManager shuiyinUtils;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    @Override
    protected void onStart() {
        super.onStart();
        // 如果Activity上加载了Fragment, 会把水印盖住, 所以放在这里加载水印是最合适的
        if (shuiyinUtils == null) {
            shuiyinUtils = WaterMarkManager.instance();
            shuiyinUtils.addWatermark2Activity(this, "员工名+员工号");
        }
    }
}