简单Dialog

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简单Dialog对话框
思路：
1.建一个构造器Builder，一般使用AlertDialog.Builder
2.设置标题Title，图片Icon，等一些通用属性
3.若是一般的提示信息，使用setMessage方法直接设置显示的文本

builder.setMessage("是否确认退出？");

若是列表项，则：

//items是一个字符串数组，用来显示list的文本信息builder.setItems(items, new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {            //这里可以通过which来判断是哪一个选项被点击，实现点击事件            }        });

若是单选框，则：

//items是一个字符串数组，用来显示radio的文本信息，第二个参数为默认选中状态builder.setSingleChoiceItems(items,0,new DialogInterface.OnClickListener() {              @Override              public void onClick(DialogInterface dialog, int which) {              }          });

若是多选列表，则

final boolean selected[]={true,false,true}; //第二个参数为默认选中状态,boolean类型的数组builder.setMultiChoiceItems(items,selected,new DialogInterface.OnMultiChoiceClickListener() {              @Override              public void onClick(DialogInterface dialog, int which, boolean isChecked) {              }          });

若是一个View，则

builder.setView(new EditText(this));

若是一个自定义布局文件，则

LayoutInflater layoutInflater = getLayoutInflater();        View view = layoutInflater.inflate(R.layout.activity_main,null);setView(view);

4.设置积极（右）/消极（左）/中立（中）按钮

builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {            }        });builder.setNegativeButton();        //消极builder.setNeutralButton();         //中立

5.别忘了，还有创建和显示

builder.create().show();

OK，这样一个简单的dialog就创建完成了，下面是源代码:

package com.example.dialogdemo;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //生成dialog        dialogLayout();    }    /**     * 简单dialog     */    private void dialog1(){        AlertDialog.Builder builder = new AlertDialog.Builder(this);        //得到构造器,    alert:警告；警觉        builder.setTitle("警告");        builder.setMessage("是否确认退出？");        builder.setIconAttribute(R.drawable.ic_launcher);        //设置是按钮，右边，positive：积极地；正确的        builder.setPositiveButton("是", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                dialog.dismiss();                           //关闭dialog                Toast.makeText(MainActivity.this, "确认"+which, Toast.LENGTH_LONG).show();            }        });        //设置否按钮，左边，Negative：消极的；否定的        builder.setNegativeButton("否", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                dialog.dismiss();                Toast.makeText(MainActivity.this, "否", Toast.LENGTH_LONG);            }        });        //设置取消按钮，中间，Neutral：中性的；中间的        builder.setNeutralButton("取消", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                dialog.dismiss();                Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_LONG).show();            }        });        builder.create().show();                                //显示dialog    }    /**     * 简洁的写法     */    private void dialog1_1(){             //先new出一个监听器，设置好监听             DialogInterface.OnClickListener dialogOnclicListener=new DialogInterface.OnClickListener(){                 @Override                 public void onClick(DialogInterface dialog, int which) {                     switch(which){                         case Dialog.BUTTON_POSITIVE:                             Toast.makeText(MainActivity.this, "确认" + which, Toast.LENGTH_SHORT).show();                             break;                         case Dialog.BUTTON_NEGATIVE:                             Toast.makeText(MainActivity.this, "取消" + which, Toast.LENGTH_SHORT).show();                             break;                         case Dialog.BUTTON_NEUTRAL:                             Toast.makeText(MainActivity.this, "忽略" + which, Toast.LENGTH_SHORT).show();                             break;                     }                 }             };             //dialog参数设置             AlertDialog.Builder builder=new AlertDialog.Builder(this);  //先得到构造器             builder.setTitle("提示"); //设置标题             builder.setMessage("是否确认退出?"); //设置内容             builder.setIcon(R.drawable.ic_launcher);//设置图标，图片id即可             builder.setPositiveButton("确认",dialogOnclicListener);             builder.setNegativeButton("取消", dialogOnclicListener);             builder.setNeutralButton("忽略", dialogOnclicListener);             builder.create().show();         }      /**     * 列表对话框     */    private void dialogList(){        AlertDialog.Builder builder = new AlertDialog.Builder(this);                            //先建构造器        final String [] items = new String[] {"清蒸","红烧","爆炒"};                              //匿名内部类不能引用非final类型变量        builder.setTitle("Tips");                                                   //设置标题        builder.setIcon(R.drawable.ic_launcher);                            //设置图片        //设置列表项        builder.setItems(items, new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                dialog.dismiss();                Toast.makeText(MainActivity.this, items[which], Toast.LENGTH_LONG).show();            }        });        //设置确定按钮        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                dialog.dismiss();                Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_LONG).show();            }        });        builder.create().show();    }    /**     * 单选对话框     */    private void dialogSingle(){        //一款超简单的没有监听器的单选框dialog        new AlertDialog.Builder(this).setTitle("单选Dialog").setSingleChoiceItems(new String[]{"sada","retger","zklcxw"}, 0, null).setPositiveButton("yes", null).setNeutralButton("no", null).create().show();    }    /**     * 复选对话框     */    private void dialogMulti(){        new AlertDialog.Builder(this).setTitle("复选").setIcon(R.drawable.ic_launcher).setMultiChoiceItems(new String[]{"篮球","足球","月球"}, new boolean[]{false,false,true}, null).setPositiveButton("yes", null).setNegativeButton("no", null).setNeutralButton("cancel", null).create().show();    }    /**     * editText对话框     */    private void dialogView(){        new AlertDialog.Builder(this).setTitle("ViewDialog").setView(new EditText(this)).setPositiveButton("yes", null).setNeutralButton("no", null).create().show();;    }    /**     * 自定义布局dialog     */    private void dialogLayout(){        LayoutInflater layoutInflater = getLayoutInflater();        View view = layoutInflater.inflate(R.layout.activity_main,null);        new AlertDialog.Builder(this).setTitle("SelfDialog").setView(view).setPositiveButton("yes", null).setNeutralButton("no", null).create().show();;    }}

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