Android 进度条
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2024-02-03 18:58:40
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<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="com.example.test12.MainActivity" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button1"
android:onClick="btn1Onclick"/>
</RelativeLayout>
package com.example.test12;
import android.support.v7.app.ActionBarActivity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends ActionBarActivity {
private final static int Msg_PROGRESS=0x001;
private final static int Msg_FINISH=0x002;
private ProgressDialog dlg;
private Handler handler=new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case Msg_PROGRESS:
int progress=msg.arg1;
dlg.setProgress(progress);
break;
case Msg_FINISH:
dlg.dismiss();
break;
}
};
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dlg=new ProgressDialog(this);
dlg.setIcon(R.drawable.ic_launcher);
dlg.setMessage("这是一个进度条");
dlg.setTitle("进度条");
dlg.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
}
public void btn1Onclick(View view){
dlg.show();
new Thread(){
@Override
public void run() {
for(int i=0;i<100;i++){
Message msg=handler.obtainMessage();
msg.what=Msg_PROGRESS;
msg.arg1=i;
handler.sendMessage(msg);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
handler.sendEmptyMessage(Msg_FINISH);
}
}.start();
}
}