Android中button的onClick事件几种方法
利用三种方法，学习button的监听事件。
方法一源码如下：
package com.example.androidtest;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.View;
import android.widget.TextView;
import android.view.View.OnClickListener;
import android.widget.Button;
//import android.text.Editable;
//import android.text.TextWatcher;
import android.widget.EditText;
public class MainActivity extends Activity {
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button)findViewById(R.id.button1);
Button button2 = (Button)findViewById(R.id.button2);
//方法一： //增加事件响应 button1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
Intent intent =new Intent();
intent.setClass(MainActivity.this, TestActivity.class);
MainActivity.this.startActivity(intent);
}
}
);
button2.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
Intent intent =new Intent();
intent.setClass(MainActivity.this, TActivity.class);
MainActivity.this.startActivity(intent);
}
}
);
}
方法二：
package com.example.androidtest;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.View;
import android.widget.TextView;
import android.view.View.OnClickListener;
import android.widget.Button;
//import android.text.Editable;
//import android.text.TextWatcher;
import android.widget.EditText;
public class MainActivity extends Activity {
@Override {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button)findViewById(R.id.button1);
Button button2 = (Button)findViewById(R.id.button2);
}
//方法二： public void myClickHandler(View target){
switch (target.getId()) {
case R.id.button1: Intent music=new Intent();
music.setClass(MainActivity.this, TestActivity.class);
MainActivity.this.startActivity(music);
// setTitle("myClickHandler01");
break;
case R.id.button2: // setTitle("myClickHandler02");
Intent moive=new Intent();
moive.setClass(MainActivity.this, TActivity.class);
MainActivity.this.startActivity(moive);
break;
}
}
}
方法三：
package com.example.androidtest;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.View;
import android.widget.TextView;
import android.view.View.OnClickListener;
import android.widget.Button;
//import android.text.Editable;
//import android.text.TextWatcher;
import android.widget.EditText;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
//方法三： public void myClickHandler01(View target){
//设置activity的头标题 // setTitle("myClickHandler01");
Intent music=new Intent();
music.setClass(MainActivity.this, TestActivity.class);
MainActivity.this.startActivity(music);
}
public void myClickHandler02(View target){
//设置activity的头标题 // setTitle("myClickHandler02");
Intent moive=new Intent();
moive.setClass(MainActivity.this, TActivity.class);
MainActivity.this.startActivity(moive);
}
}
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