android开发入门 点击按钮弹出对话框

在MainActivity中添加以下函数

 1     public void showDialog(View view){
 2         AlertDialog.Builder builder=new AlertDialog.Builder(this);
 3         builder.setTitle("标题");
 4         builder.setMessage("提示内容");
 5         builder.setPositiveButton("我知道了", new DialogInterface.OnClickListener() {
 6             @Override
 7             public void onClick(DialogInterface dialog, int which) {
 8  
 9             }
10         });
11         AlertDialog dialog=builder.create();
12         dialog.show();
13     }

在按钮的OnCIick事件绑定以上函数

android:onClick="showDialog"

 

标签：builder,DialogInterface,AlertDialog,showDialog,dialog,new,4.27
来源： https://www.cnblogs.com/gj-zzh2021/p/16201264.html