例子写的很简单
这个是xieLaoban.java
public class xieLaoban{
private Context mContext;
public void toastDemo(Context context) {
this.mContext = context;
Toast.makeText(mContext, "xieLaoban", Toast.LENGTH_LONG).show();
}
}
然后~
MainActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = this;//重点
xie_laoban= (TextView) findViewById(R.id.xie_laoban);//找到按钮
xie_laoban.setOnClickListener(new View.OnClickListener() {//内部点击事件
@Override
public void onClick(View v) {
xielaoban= new xieLaoban ();
xielaoban.toastDemo(context);
}
});
}
还有哈~要定义一下
private Context context;
private xieLaoban xielaoban;