android整合--自定义dialog

有的时候，可能需要弹出一个对话框，以便从用户的输入来获取某些确认信息。这种情况下，可以重写Activity基类中的受保护方法（protected）onCreateDialog()。

1、创建一个工程testone

2、main.xml 两个button 点击显示对话框

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/btnprogress"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="onclick"
android:text="点击显示进度条"
/>
<Button
android:id="@+id/btndialog"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="onclick1"
android:text="点击显示自定义对话框"
/>
</LinearLayout>

3、创建activity

/** Called when the activity is first created. */
ProgressDialog progress = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
}

public void onclick(View view){
showDialog(0);
progress.setProgress(0);
new Thread(
new Runnable(){
public void run(){
for(int i = 1;i <= 15;i++){
try {
Thread.sleep(1000);
progress.incrementProgressBy((int) 100/15);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

progress.dismiss();

}
}
).start();

}

public void onclick1(View view){
showDialog(1);
}
/* (non-Javadoc)
* @see android.app.Activity#onCreateDialog(int)
*/
@Override
protected Dialog onCreateDialog(int id) {
// TODO Auto-generated method stub
switch(id){
case 0:
progress = new ProgressDialog(this);
progress.setTitle("progress bar");
progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progress.setButton(DialogInterface.BUTTON_POSITIVE, "ok", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "you clicked the ok button", Toast.LENGTH_LONG).show();
}
});
progress.setButton(DialogInterface.BUTTON_NEGATIVE, "cancel", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "you clicked the cancel button", Toast.LENGTH_LONG).show();
}
});
progress.setButton(DialogInterface.BUTTON_NEUTRAL, "neutral", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "you clicked the neutral button", Toast.LENGTH_LONG).show();
}
});
return progress;

case 1:
return new AlertDialog.Builder(this)
.setTitle("the dialog")
.setIcon(R.drawable.icon)
.setPositiveButton("ok", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "you clicked the dialog ok button", Toast.LENGTH_LONG).show();
}
})
.setNegativeButton("cancel", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "you clicked the dialog cancel button", Toast.LENGTH_LONG).show();
}
}).create();
}
return null;
}

点击第一个button显示进度条

点击第二个button显示自定义对话框

想要显示对话框，首先要重写Activity基类中的onCreateDialog()方法：

[java]
view plaincopy

@Override
protected Dialog onCreateDialog(int id) {
// ...
}

当调用showDialog()的时候，上面被重写的方法就被调用了：

[java]
view plaincopy

public void onClick(View v) {
showDialog(0);
}

这个创建对话框的onCreateDialog()方法是一个被Activity控制的回调函数，当调用showDialog()时，onCreateDialog()回调函数就被触发了。showDialog()方法接受一个Integer参数，用来识别到底要显示哪个对话框。一般情况下，使用switch语句去判断显示不同的对话框。

想要创建一个对话框，还需要使用AlertDialog类的Builder构造器，设置不同的属性，比如图标、标题、按钮、单选框等等：

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case 0:
Builder builder = new AlertDialog.Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("This is a dialog with some simple text...");
builder.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
Toast.makeText(getBaseContext(), "OK clicked!",
Toast.LENGTH_SHORT).show();
}
});

builder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
Toast.makeText(getBaseContext(), "Cancel clicked!",
Toast.LENGTH_SHORT).show();
}
});

builder.setMultiChoiceItems(items, itemsChecked,
new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
Toast.makeText(
getBaseContext(),
items[which]
+ (isChecked ? " checked!"
: " unchecked!"),
Toast.LENGTH_SHORT).show();
}
});
return builder.create();
}
return null;
}

源码下载地址：
http://download.csdn.net/download/nameyuxiang/6266571