Dialog详解
一、创建的一般步骤：
1)创建构造器
2)给构建器设置属性 如：标题 内容 按钮 设置布局
3)创建dialog
4)显示dialog
代码如下：
AlertDialog.Builder builder = new AlertDialog.Builder(this);//创建构造器 AlertDialog dialog = builder.create();//创建dialog dialog.show();//显示dialog
二、特性
1)普通对话框：
builder.setTitle("谁是你的女神???");
builder.setMessage("章泽天是我的女神。。。。");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNeutralButton("隐藏", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setCancelable(false);
2)选择对话框
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getApplicationContext(),
"你选择的是: " + items[which], 1).show();
}
});
3)单选框
builder.setSingleChoiceItems(items, 0,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getApplicationContext(),
"你的老婆是: " + items[which], 1).show();
}
});
4)多选框
builder.setMultiChoiceItems(items, checkedItems,
new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
Toast.makeText(getApplicationContext(),
"你选择了 :" + items[which], 1).show();
}
});
5)自定义对话框
LayoutInflater inflater = LayoutInflater.from(this); View view = inflater.inflate(R.layout.custom, null); builder.setView(view);
三、各种对话框的图示：
1)普通对话框
2)选择对话框
3)单选框
4)多选框
5)自定义对话框
四、代码实现
1、main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="普通对话框"
android:onClick="comment"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="选择对话框"
android:onClick="select"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="单选框"
android:onClick="selectSingle"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="多选框"
android:onClick="selectMultiple"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="自定义对话框"
android:onClick="selectSelf"
/>
</LinearLayout>
2、custom.xml
这个布局文件在自定义对话框时使用
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="请输入密码"
/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="请再次输入密码"
/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:id="@+id/bt_ok"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="确定"
/>
<Button
android:id="@+id/bt_cancel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="取消"
/>
</LinearLayout>
</LinearLayout>
3、MainActivity
package com.njupt.dialog1;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void comment(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("谁知你的女神???");
builder.setMessage("章泽天是我的女神。。。。");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNeutralButton("隐藏", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setCancelable(false);
AlertDialog dialog = builder.create();
dialog.show();
}
public void select(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] items = new String[] { "章泽天", "刘诗诗", "康逸琨" };
builder.setTitle("请选择你的女神...");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getApplicationContext(),
"你选择的是: " + items[which], 1).show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
public void selectSingle(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] items = new String[] { "章泽天", "刘诗诗", "康逸琨" };
builder.setTitle("请选择你的老婆是: ");
builder.setSingleChoiceItems(items, 0,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(getApplicationContext(),
"你的老婆是: " + items[which], 1).show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
public void selectMultiple(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final String[] items = new String[] { "黄俊东", "黄东东", "allen" };
final boolean[] checkedItems = new boolean[] { true, true, false };
builder.setTitle("你认为以下谁是帅哥");
builder.setMultiChoiceItems(items, checkedItems,
new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
Toast.makeText(getApplicationContext(),
"你选择了 :" + items[which], 1).show();
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
int i;
StringBuilder sb = new StringBuilder("");
for (i = 0; i < items.length; ++i) {
sb.append(items[i]);
}
Toast.makeText(getApplicationContext(), sb.toString(), 1)
.show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
public void selectSelf(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
LayoutInflater inflater = LayoutInflater.from(this);
View view = inflater.inflate(R.layout.custom, null);
builder.setView(view);
builder.setTitle("自定义框");
final AlertDialog dialog = builder.create();
dialog.show();
Button bt_ok = (Button) view.findViewById(R.id.bt_ok);
Button bt_cancel = (Button) view.findViewById(R.id.bt_cancel);
bt_ok.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
bt_cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}