Android中的弹出提示框

在做Android平台的APP时候，经常会遇到自定义弹出对话框，在Android中，已经预先给我们设置了几种弹出对话框的接口DialogBuilder ，今天闲来无事，特意整理了一下，方便日后学习回顾。

1.这是一个最简单的应用，就是弹出一个消息框，先看效果：

Android中的弹出提示框_第1张图片

activity_main.xml

MainActivity.java

package com.example.sm.myapplication;import android.app.Activity;import android.app.AlertDialog;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.WindowManager;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {    private Button button;    private EditText editText;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button = (Button)findViewById(R.id.button);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                AlertDialog.Builder builder  = new AlertDialog.Builder(MainActivity.this);                builder.setTitle("确认" ) ;                editText = (EditText)findViewById(R.id.text);                builder.setMessage(editText.getText().toString()) ;                builder.setPositiveButton("是" ,  null );                builder.show();            }        });    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

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