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  • 初识SeekBar

    SeekBar拖动条,是Progress的间接子类

    1 <SeekBar
    2             android:id="@+id/seekBar1"
    3             android:layout_width="match_parent"
    4             android:layout_height="wrap_content"
    5             android:progress="30"
    6             //Draws the thumb on a seekbar. 
    7             android:thumb="@drawable/peasy" />

    SeekBar事件,被拉动时,onProgressChanged会一直被触发

    
    
     1 public void showSeekBar() {
     2         seekBar = (SeekBar) findViewById(R.id.seekBar1);
     3         seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
     4 
     5             @Override
     6             public void onStopTrackingTouch(SeekBar seekBar) {
     7                 // TODO Auto-generated method stub
     8                 Log.i(TAG, "onStopTrackingTouch");
     9                 Toast.makeText(FormActivity.this,
    10                         "current level is " + seekBar.getProgress(), 3000)
    11                         .show();
    12             }
    13 
    14             @Override
    15             public void onStartTrackingTouch(SeekBar seekBar) {
    16                 // TODO Auto-generated method stub
    17                 Log.i(TAG, "onStartTrackingTouch");
    18 
    19             }
    20 
    21             @Override
    22             public void onProgressChanged(SeekBar seekBar, int progress,
    23                     boolean fromUser) {
    24                 // TODO Auto-generated method stub
    25                 Log.i(TAG, "onProgressChanged");
    26 
    27             }
    28         });
    29     }
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  • 原文地址:https://www.cnblogs.com/izhanjun/p/4185946.html
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