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<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<com.example.administrator.third.MyButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="单击我"/>
</LinearLayout>
package com.example.administrator.third;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Display;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.MultiAutoCompleteTextView;
import android.widget.ProgressBar;
import android.widget.RadioGroup;
import android.widget.SimpleAdapter;
import android.widget.ToggleButton;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class MainActivity extends Activity
{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
class MyButton extends Button
{
public MyButton(Context context, AttributeSet set)
{
super(context, set);
}
public boolean onKeyDown(int keyCode, KeyEvent event)
{
super.onKeyDown(keyCode, event);
Log.e("eeee", "the onKeyDown in MyButton eeeeeeeeee");
Log.i("eeee", "the onKeyDown in MyButton iiiiiiiiii");
Log.v("eeee", "the onKeyDown in MyButton vvvvvvvvvv");
return true;
}
}
class MyButton extends Button
{
public MyButton(Context context, AttributeSet set)
{
super(context, set);
}
public boolean onKeyDown(int keyCode, KeyEvent event)
{
super.onKeyDown(keyCode, event);
Log.e("eeee", "the onKeyDown in MyButton eeeeeeeeee");
Log.i("eeee", "the onKeyDown in MyButton iiiiiiiiii");
Log.v("eeee", "the onKeyDown in MyButton vvvvvvvvvv");
return true;
}
public boolean onTouchEvent(MotionEvent event)
{
Log.v("onTouchEvent", "555555555555555555");
return false;
}
}