安卓对话框之-----进度对话框(ProgressDialog)
使用代码ProgressDialog.show(ProgressDialogActivity.this, "请稍等", "数据正在加载中...", true);创建并显示一个进度对话框。
调用setProgressStyle()方法设置进度对话框风格。有两种风格：
ProgressDialog.STYLE_SPINNER 旋体进度条风格 (为默认风格)
ProgressDialog.STYLE_HORIZONTAL 横向进度条风格
1、同样，我们也在布局文件中用一个按钮进行测试
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginTop="140dp"
android:onClick="openDialog"
android:text="@string/text_dialog"/>
</RelativeLayout>
2、引用的string.xml中的值
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">lession16-dialog</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="text_dialog">对话框的案例</string>
</resources>
3、MainActivity中的代码：
package com.example.lession16_dialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
public Handler handler;
private static final int MAX_PROGRESS=100;
private static final int PRO=10;
private int progress=10;
private ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@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;
}
@SuppressWarnings("deprecation")
public void openDialog(View v) {
handler=new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case PRO:
if(progress>=MAX_PROGRESS){
//重新设置
progress=0;
progressDialog.dismiss();//销毁对话框
}else{
progress++;
progressDialog.incrementProgressBy(1);
//延迟发送消息
handler.sendEmptyMessageDelayed(PRO, 100);
}
break;
default:
break;
}
}
};
progressDialog=new ProgressDialog(this);
progressDialog.setIcon(R.drawable.ic_launcher);
progressDialog.setTitle("正在处理数据。。。");
progressDialog.setMessage("请稍后。。");
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置进度条对话框//样式（水平，旋转）
//进度最大值
progressDialog.setMax(MAX_PROGRESS);
progressDialog.setButton("暂停",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//删除消息队列
handler.removeMessages(PRO);
}
});
progressDialog.setButton2("取消",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//删除消息队列
handler.removeMessages(PRO);
//恢复进度条初始值
progress=0;
progressDialog.setProgress(progress);
}
});
//显示
progressDialog.show();
//必须设置到show之后
progress=(progress>0)?progress:0;
progressDialog.setProgress(progress);
//线程
handler.sendEmptyMessage(PRO);
}
public void test1() {
new AlertDialog.Builder(this)
.setIcon(R.drawable.ic_launcher)
.setTitle("xxxx")
.setMessage("是否创建文件")
.setPositiveButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 创建文件
new AlertDialog.Builder(MainActivity.this).setMessage(
"文件已经被创建").show();
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
new AlertDialog.Builder(MainActivity.this)
.setMessage("您已经选择了取消的按钮,该文件不会被创建").create()
.show();
}
}).show();
}
public void test2() {
// 创建对话框
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
// 设置对话框的标题
alertDialog.setTitle("xxxx");
// 设置对话框的内容
alertDialog.setMessage("消息");
// 显示对话框
alertDialog.show();
}
public void test3() {
AlertDialog alertDialog = new AlertDialog.Builder(this)
.setTitle("xxxx").setMessage("啊大声大声道").show();
}
public void test4() {
final String items[] = { "Java", "Php", "3G", ".Net" };
new AlertDialog.Builder(this).setTitle("简单列表对话框")
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 第一个参数dialog int which 条目
Toast.makeText(getApplicationContext(),
"aaa" + items[which], Toast.LENGTH_LONG).show();
}
}).show();
}
public void test5(){
final String items[]={"JAVA",".NET","3G","PHP"};
new AlertDialog.Builder(this).setTitle("单选列表对话框")
//数字2代表的是数组的下标
.setSingleChoiceItems(items, 2, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//第一个参数 dialog int which 那个条目
Toast.makeText(getApplicationContext(), "xxxxx"+items[which], Toast.LENGTH_LONG).show();
}
}).show();
}
public void test6(){
final String items[]={"JAVA",".NET","PHP","3G"};
new AlertDialog.Builder(this).setTitle("多选列表对话框的简单实现")
.setMultiChoiceItems(items, new boolean[]{false, true,true,true},new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
Toast.makeText(getApplicationContext(), "sad"+items[which], Toast.LENGTH_LONG).show();
}
}).show();
}
}
4、效果图：
