若一个Activity中有若干个Button 每个Button都需要单独设立监听的话过于麻烦
private Intent a,b;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Btn = (Button) findViewById(R.id.button1);
Btn2 = (Button) findViewById(R.id.button2);
Btn.setOnClickListener(new ButtonListener());
Btn2.setOnClickListener(new ButtonListener());
}
private class ButtonListener implements View.OnClickListener{
public void onClick(View v) {
switch(v.getId()) {
case R.id.button1:
a = new Intent(MainActivity.this,hahah.class);
startActivity(a);
break;
case R.id.Button2:
b = new Intent(MainActivity.this,hahaha.class);
startActivity(b);
break;
}
}
}
通过传入Button的Id switch语句进行选择 进行监听 实现不同的操作