android 创建Dialog
android使用ShowDialog来显示一个Dialog，当第一次调用ShowDialog时，会调用Activity的onCreateDialog方法，我们只需重写该方法，在改方法中创建一个Dialog.
而onPrepareDialog(int, Dialog)在Dialog显示时每次都会被调用。因此如果要动态修改dialog的信息，可以在改方法中实现.
下面给出使用实例:
showDialog(v.getId()); // 调用showDialog之后会回调onCreateDialog
@Override
protected Dialog onCreateDialog(int id) {
// TODO Auto-generated method stub
switch (id) {
case R.id.btnTwobtn:
return CreateDialog();
case R.id.btnthreebtn:
return CreateDialog3();
case R.id.btnInput:
return CreateDialogLogin();
case R.id.btnwait:
// 启动线程来关闭等待框
new Thread() {
@Override
public void run() {
int i = 0;
while (i < 10) {
try {
Thread.sleep(1000);
}
catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
i++;
}
dismissDialog(R.id.btnwait);
}
}.start();
return CreateProcessDialog();
case R.id.btnTimePicker:
return CreateTimePickerDialog();
default:
return CreateDialog();
}
}
// 第一个按钮
private Dialog CreateDialog() {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("dialog test");
builder.setMessage("点击按钮测试一下吧，看看title的变化");
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click ok");
}
});
builder.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click cancel");
}
});
return builder.create();
}
// 第2个按钮
private Dialog CreateDialog3() {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("dialog test");
builder.setMessage("点击按钮测试一下吧，看看3个按钮对title的变化");
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click ok");
}
});
builder.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click cancel");
}
});
builder.setNeutralButton("详细", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click detail");
}
});
return builder.create();
}
// 第3个按钮 弹出输入框
private Dialog CreateDialogLogin() {
AlertDialog.Builder builder = new Builder(this);
// 加载layout文件
LayoutInflater inflater = LayoutInflater.from(this);
View view = inflater.inflate(R.layout.logindialog, null);
builder.setView(view);
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click ok");
}
});
builder.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click cancel");
}
});
builder.setNeutralButton("详细", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
setTitle("click detail");
}
});
return builder.create();
}
// 第4个按钮 等待框
private Dialog CreateProcessDialog() {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setMessage("正在运行，请等待...");
return dialog;
}
// 第5个按钮 时间选择框
private Dialog CreateTimePickerDialog() {
TimePickerDialog dialog = new TimePickerDialog(this, 0,
mTimeSetListener, 0, 0, false);
return dialog;
}
private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
int hour = hourOfDay;
int minute1 = minute;
Toast.makeText(getBaseContext(),
"You have selected : " + hour + ":" + minute1,
Toast.LENGTH_SHORT).show();
}
};
运行结果如下：
如果我们想把一个Activity显示为一个Dialog形式，可以在androidManifest.xml中的activity的属性设为android:theme="@android:style/Theme.Dialog，伪装为dialog
<activity android:name="DialogActivity" android:theme="@android:style/Theme.Dialog"></activity>