转自：http://www.cnblogs.com/xiaofeixiang/p/4084056.html
Android中经常会需要在Android界面上弹出一些对话框提示用户，比如App的退出的时候都会有各种框来挽留你的心，支付宝的时候输入密码的密码框，非常常见及其实用的功能，类似于JS中的alter，C#中C/S中常用MessgeBox，总而言之就是一个功能弹，弹，弹，本文就简单的叙述一下Dialog的各种弹框使用及监听，顺便写了一个简单的自定义弹框，接下来请看正文:
一般对话框
先看下整个App页面:
看下一般对话框的结果:
具体代码的实现，其中定义了两个按钮，一个是确定（PositiveButton）按钮，一个是取消（NegativeButton）按钮:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("亲,你真的要离开吗?");
//
相当于确定
builder.setPositiveButton("退出",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "是的，哥要走了",
Toast.LENGTH_SHORT).show();
}
});
//
相当于取消
builder.setNegativeButton("再看看",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "行，哥再看会",
Toast.LENGTH_SHORT).show();
}
});
builder.show();
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ICON对话框
上面只是用到了两个按钮，其实还有一个是中立按钮，另外发现每次都写一个监听事件感觉太麻烦了，可以单独写一个监听事件去判断哪个事件被触发了:
单独定义个DialogClickListener:
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private DialogInterface.OnClickListener
dialogClickListener = new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
switch (which)
{
case DialogInterface.BUTTON_POSITIVE:
Toast.makeText(MainActivity.this, "强烈支持" +
which,
Toast.LENGTH_SHORT).show();
break;
case DialogInterface.BUTTON_NEUTRAL:
Toast.makeText(MainActivity.this, "跟我无关，我是中立的" +
which,
Toast.LENGTH_SHORT).show();
break;
case DialogInterface.BUTTON_NEGATIVE:
Toast.makeText(MainActivity.this, "强烈反对" +
which,
Toast.LENGTH_SHORT).show();
break;
default:
break;
}
}
};
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按钮事件的调用:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("XX视频");
builder.setIcon(android.R.drawable.btn_star);
builder.setMessage("如何看待香港*事件?");
builder.setPositiveButton("支持",
dialogClickListener);
builder.setNegativeButton("反对",
dialogClickListener);
//
中立
builder.setNeutralButton("中立",
dialogClickListener);
builder.show();
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列表对话框
看下效果图:
代码实现:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("NBA幻觉");
builder.setIcon(android.R.drawable.btn_star);
final String[]
nameArrStrings = new String[]
{ "马刺很老", "小牛很弱",
"火箭很强" };
builder.setItems(nameArrStrings, new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this,
nameArrStrings[which],
Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定", new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
}
});
builder.setNegativeButton("取消", new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
}
});
builder.show();
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单选对话框
效果图：
代码实现:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("NBA球队");
builder.setIcon(android.R.drawable.btn_radio);
final String[]
ballArr = new String[]
{ "骑士", "热火", "凯尔特人" };
builder.setSingleChoiceItems(ballArr, 1, new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this,
ballArr[which],
Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定", new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
}
});
builder.setNegativeButton("取消", new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
}
});
builder.show();
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多选对话框
效果图:
代码实现:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("NBA球星");
builder.setIcon(android.R.drawable.btn_radio);
final String[]
ballstartArr = new String[]
{ "邓肯", "诺维斯基", "莱昂纳德",
"科比" };
final boolean[]
multiCheckedArrStrings = new boolean[]
{ true,
false, true, false };
builder.setMultiChoiceItems(ballstartArr,
multiCheckedArrStrings,
new OnMultiChoiceClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which,
boolean isChecked)
{
//
TODO Auto-generated method stub
StringBuffer
buffer = new StringBuffer();
for (int i
= 0;
i < multiCheckedArrStrings.length; i++) {
if (multiCheckedArrStrings[i])
{
buffer.append(ballstartArr[i]
+ ",");
}
}
buffer.deleteCharAt(buffer.length()
- 1);
Toast.makeText(MainActivity.this,
buffer,
Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("确定", new OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
}
});
builder.show();
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文本对话框
比如说支付宝，转账的时候你需要输入密码，弹出一个密码输入框，效果如图:
代码实现,，这个时候你需要给builder中的view赋值:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("输入密码");
builder.setIcon(android.R.drawable.btn_star);
final EditText
editText = new EditText(MainActivity.this);
builder.setView(editText);
builder.setPositiveButton("确定",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this,
"输入的密码是：" +
editText.getText(),
Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "取消",
Toast.LENGTH_SHORT).show();
}
});
builder.show();
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自定义对话框
上面的那个EditText是创建的，其实可以自定义一个布局，然后通过填充进去,效果如下:
自定义一个dialog_text.xml文件:
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<?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="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密码:" />
<EditText
android:id="@+id/edit_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
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代码实现:
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builder
= new AlertDialog.Builder(this);
builder.setTitle("输入密码");
builder.setIcon(android.R.drawable.btn_star);
final EditText
editText = new EditText(MainActivity.this);
builder.setView(editText);
builder.setPositiveButton("确定",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this,
"输入的密码是：" +
editText.getText(),
Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("取消",
new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface
dialog, int which)
{
//
TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "取消",
Toast.LENGTH_SHORT).show();
}
});
builder.show();
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------------2015.11.15更新---忘记写了，还有一种是进度条对话框，简单的进度对话框和带进度的对话框-----
代码如下:
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ProgressDialog
progressDialog=new ProgressDialog(this);
progressDialog.setTitle("XX助手");
progressDialog.setMessage("XX正在更新。。。");
progressDialog.show();
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显示进度的对话框:
代码如下:
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final ProgressDialog
precentDialog=new ProgressDialog(this);
precentDialog.setTitle("XX下载");
precentDialog.setMessage("XX正在更新。。。");
precentDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
precentDialog.setMax(100);
precentDialog.show();
new Thread(){
public void run()
{
for (int i
= 0;
i < 100;
i++) {
try {
Thread.sleep(50);
} catch (InterruptedException
e) {
e.printStackTrace();
}
precentDialog.setProgress(i);
}
precentDialog.dismiss();
};
}.start();
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