<?xml version="1.0" encoding="utf-8"?>
<!-- 37、 -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
style="@style/wizard_textview_title"
android:gravity="center"
android:text="清 理 缓 存 " />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ProgressBar
android:id="@+id/pb_clean_cache"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="30dip" />
<TextView
android:id="@+id/tv_clean_status"
android:layout_width="match_parent"
android:layout_height="30dip"
android:gravity="center_vertical"
android:text="一键清理缓存"
android:textColor="#ffffffff"
android:textSize="20sp" />
</RelativeLayout>
<Button
android:id="@+id/btn_clean_cache"
android:layout_width="match_parent"
android:layout_height="50dip"
android:background="@drawable/btn_green_selector"
android:text="一键清理缓存" />
</LinearLayout>
package cn.zengfansheng.mobilesafe;
import java.util.List;
import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
/**
* 23、清理缓存Activity
* @author hacket
*/
public class CleanCacheActivity extends Activity {
private final String TAG = "CleanCacheActivity";
private ProgressBar pb_clean_cache;// 清理的进度条
private Button btn_clean_cache;// 清理的按钮
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_clean_cache);
pb_clean_cache = (ProgressBar) this.findViewById(R.id.pb_clean_cache);
btn_clean_cache = (Button) this.findViewById(R.id.btn_clean_cache);
btn_clean_cache.setOnClickListener(new OnClickListener() {
int count = 0;
@Override
public void onClick(View v) {
// 由于获取缓存是一个很耗时的操作，所以要放在子线程中进行
new Thread() {
public void run() {
Log.i(TAG, "开始清理缓存~~~");
PackageManager packageManager = getPackageManager();
List<PackageInfo> installedPackages = packageManager.getInstalledPackages(0);
pb_clean_cache.setMax(installedPackages.size());
for (PackageInfo packageInfo : installedPackages) {
count++;
pb_clean_cache.setProgress(count);
try {
Thread.sleep(20);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}.start();
}
});
}
}
