本文主要是介绍android-xml和代码里面添加listerner的方法和优先级，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
首先:如果我们在xml里面定义了一个listener,又在代码里面动态的注册了一个listener.当我们调用时会使用xml里面的.
1.xml代码添加:
<Buttonandroid:id="@+id/hd_test"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="硬解码测试"android:onClick="doNothing"/>
donothing方法放到使用这个layout的代码里面去实现:
public void doNothing(View view){}
2.java层添加:
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_native);Button button = (Button)findViewById(R.id.hd_test);ButtonListener b = new ButtonListener();button.setOnTouchListener(b);textView = (TextView)findViewById(R.id.hd_result);}class ButtonListener implements View.OnClickListener, View.OnTouchListener{@Overridepublic void onClick(View v) {if(v.getId() == R.id.hd_test){testHdTranscode(v);}}@Overridepublic boolean onTouch(View v, MotionEvent event) {if(v.getId() == R.id.hd_test){if(event.getAction() == MotionEvent.ACTION_DOWN){textView.setText("");}}return false;}}public void hdecode(View view){AHVideoLog.d("wlz", "native Test, hdecode start");FFmpegUtil util = new FFmpegUtil();LvCmdResult result = util.hdecode("", "");}public void testHdTranscode(View view){if(true){textView.setText("");glTranscode(view);textView.setText("success !!");return;}if (false) {cmdHdTranacode(view);return;}//TextView text ;Expect expect = new Expect();NativeTest test = new NativeTest();test.testHdTranscode(in, out, 1280, 720, 1.0f, expect);String relust ="width: " + expect.width + " height: " + expect.height + " rotation: " + expect.rotation +" pps: " + expect.pps_ok + " sps: " + expect.sps_ok + " mediacodec" + expect.mediacodec_ok;Log.e(TAG, "testHdTranscode, width: " + relust);textView.setText(relust);}
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