Android进度条
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package com.malakana.dialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
public class MainActivity extends Activity {
final int PROGRESS_DIALOG = 0;
final int INCREASE = 0;
ProgressDialog pd;
Handler hd;
@SuppressLint("HandlerLeak")
@Override
public void onCreate(Bundle savedInstanceState) {
//protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button bok = (Button) findViewById(R.id.button);
bok.setOnClickListener(new OnClickListener() {
@SuppressWarnings("deprecation")
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
showDialog(PROGRESS_DIALOG); //显示对话框
}
});
// 创建Handler
hd = new Handler() {
@Override
//重写的方法
public void handleMessage(Message msg) {
//public void handlerMessage(Message msg) {
//调用父类
super.handleMessage(msg);
//判断接收的信息
switch (msg.what) {
//接收到的消息为INCREASE
case INCREASE:
//进度条每次加1
pd.incrementProgressBy(1);
//判断是否大于100
if (pd.getProgress() >= 100) {
pd.dismiss();
}
//退出
break;
}
}
};
}
//创建对话框
@Override
public Dialog onCreateDialog(int id) {
//判断id
switch (id) {
case PROGRESS_DIALOG:
pd = new ProgressDialog(this);
//设置最大值
pd.setMax(100);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
//设置标题
pd.setTitle(R.string.title);
pd.setCancelable(true);
//设置进度对话框不能用回退按钮关闭
//pd.setCancelable(false);
Log.d("kkk", "kkk");
break;
}
return pd;
}
@SuppressWarnings("deprecation")
@Override
//每次弹出对话框时被回调以动态更新对话框内容的方法
public void onPrepareDialog(int id, Dialog dialog) {
// 调用父类
super.onPrepareDialog(id, dialog);
switch (id) {
case PROGRESS_DIALOG:
//对话框进度清零
pd.incrementProgressBy(-pd.getProgress());
new Thread() {
public void run() {
while (true) {
hd.sendEmptyMessage(INCREASE);
if (pd.getProgress() >= 100) {
break;
}
try {
Thread.sleep(40);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}.start();
break;
}
}
}
名称栏目：Android进度条
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