Android SeekBar上方的自定义文本
我试图在SeekBar的拇指上方画一些文字,如上图所示。其思想是,当您沿SeekBar移动拇指时,拇指上方会显示文本。我可以在拇指内画文本,但当我尝试在拇指外画文本时,它不起作用。下面是我的代码:Android SeekBar上方的自定义文本,android,android-canvas,android-seek,Android,Android Canvas,Android Seek,我试图在SeekBar的拇指上方画一些文字,如上图所示。其思想是,当您沿SeekBar移动拇指时,拇指上方会显示文本。我可以在拇指内画文本,但当我尝试在拇指外画文本时,它不起作用。下面是我的代码: public class MainActivity extends Activity { SeekBar mybar; @Override public void onCreate(Bundle savedInstanceState) { super.onC
public class MainActivity extends Activity {
SeekBar mybar;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mybar = (SeekBar) findViewById(R.id.seekBar1);
mybar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// add here your implementation
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// add here your implementation
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
int value = seekBar.getProgress();
String valueString = value + "";
Paint paint = new Paint();
paint.setColor(Color.BLACK);
Bitmap b = Bitmap.createBitmap(600, 600,
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(b);
canvas.drawText(valueString, 100, 100, paint);
seekBar.draw(canvas);
}
});
}
}
我是否必须重写onDraw方法并改为那样做?试试这个,你可以发布示例屏幕截图除外的输出!我已经编辑了我的帖子