示例代码：
package cn.class3g.activity;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class ActivityLifeCydeActivity extends Activity {
private static final String TAG = "lifeCycle";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.i(TAG,"onCreate");
Button showMyDialogBtn = (Button) findViewById(R.id.showMyDialog);
showMyDialogBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(ActivityLifeCydeActivity.this,
DialogActivity.class);
startActivity(intent);
}
});
Button showAlertDialogBtn = (Button) findViewById(R.id.showAlertDialog);
showMyDialogBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showAlertDialog();
}
});
}
public void showAlertDialog(){
AlertDialog.Builder builder = new Builder(ActivityLifeCydeActivity.this);
builder.setMessage("确认退出吗？");
builder.setTitle("提示");
builder.setPositiveButton("确定",
new android.content.DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
ActivityLifeCydeActivity.this.finish();
}
});
builder.setNegativeButton("取消",new OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
}
});
builder.create().show();
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Log.i(TAG,"onDestroy");
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
Log.i(TAG,"onPause");
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
Log.i(TAG,"onRestart");
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.i(TAG,"onResume");
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
Log.i(TAG,"onStart");
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
Log.i(TAG,"onStop");
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onRestoreInstanceState(savedInstanceState);
Log.i(TAG,"onRestoreInstanceState");
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
Log.i(TAG,"onSaveInstanceState");
}
}
出现如下图，实现触发事件：
