安卓AlertDialog 的使用

引入空间

import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;

---

1. final AlertDialog dia;

dia=new AlertDialog.Builder(this).setTitle("嘿嘿")
.setMessage("你好啊，第一次来这里吗？")
.setIcon(R.mipmap.ic_launcher)
.setPositiveButton("是的", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

}
})
.setNegativeButton("不是",null)
.setNeutralButton("不告诉你",null)
.create();

 		dia.show()

    2. class vclick implements View.OnClickListener

 {

     @Override
     public void onClick(View v) {
         switch ( v.getId())
         {

             case R.id.center:
             AlertDialog.Builder alert=new AlertDialog.Builder(MainActivity.this);
                 alert.setIcon(R.mipmap.ic_launcher);
                 alert.setTitle("希望你好好的但是我还是要问问的！");
                 alert.setMessage("你好吗？");
                 alert.setPositiveButton("好啊",new dclick());
                 alert.setNegativeButton("不好",new dclick());
                 alert.setNeutralButton("还行",new dclick());
                 alert.show();
                 break;

             case R.id.b2:

                 AlertDialog.Builder listalert=new AlertDialog.Builder(MainActivity.this);
                 String [] s={"我是谁？","我为什么在这个世界？","有什么意义？"};
                 listalert.setIcon(R.mipmap.ic_launcher);
                 listalert.setTitle("你希望我回答你什么问题呐?");
                 listalert.setItems(s,new dclick());
                 listalert.show();
                 break;

         }

     }
 }

3

class  dclick implements DialogInterface.OnClickListener
{

    @Override
    public void onClick(DialogInterface dialog, int which) {
        switch (which)
        {
            case DialogInterface.BUTTON_POSITIVE:
                Toast.makeText(MainActivity.this,"开心就好！哈哈哈，你开心我也开心！",Toast.LENGTH_SHORT).show();
                break;
            case DialogInterface.BUTTON_NEGATIVE:
                Toast.makeText(MainActivity.this,"不开心吗？那可不行啊，你有我哪，你桑心我陪你桑心！",Toast.LENGTH_SHORT).show();
                break;
            case DialogInterface.BUTTON_NEUTRAL:
                Toast.makeText(MainActivity.this,"那可不行啊，人生潇洒是一场，悲桑也是一场，怎么可以随随便便，开心点啊！",Toast.LENGTH_SHORT).show();
                break;
            case 0:
                Toast.makeText(MainActivity.this,"我可不管反正我就喜欢你！",Toast.LENGTH_SHORT).show();
                break;
            case 1:
                Toast.makeText(MainActivity.this,"因为爱这个世界啊",Toast.LENGTH_SHORT).show();
                break;
            case 2:
                Toast.makeText(MainActivity.this,"活着就是有意义",Toast.LENGTH_SHORT).show();
                break;
        }

    }
}