package com.example.archer.mobliesafe;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageStats;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Message;
import android.os.RemoteException;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.format.Formatter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import butterknife.Bind;
import static android.R.id.list;
import static android.view.View.inflate;
public class CleanCacheActivity extends AppCompatActivity {
private PackageManager packageManager;
private List<CacheInfo> cacheInfos;
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initUI();
}
private void initUI() {
setContentView(R.layout.activity_clean_cache);
listView = (ListView) findViewById(R.id.list_view_cache);
cacheInfos = new ArrayList<>();
packageManager = getPackageManager();//当我们去拿数据的时候，面对的是一个耗时的操作，因此需要开启一个子线程
new Thread(){
@Override
public void run() {
// packageManager.getPackageSizeInfo();
List<PackageInfo> installedPackages = packageManager.getInstalledPackages(0);
for (PackageInfo packageInfo : installedPackages) {
getCacheSize(packageInfo);
}
handler.sendEmptyMessage(0);
}
}.start();
}
private Handler handler=new Handler(){
@Override
public void handleMessage(Message msg) {
CacheAdapter MyAdapter=new CacheAdapter();
listView.setAdapter(MyAdapter);
}
};
//写一个适配器用于适配数据
private class CacheAdapter extends BaseAdapter{
/**
* How many items are in the data set represented by this Adapter.
*
* @return Count of items.
*/
@Override
public int getCount() {
return cacheInfos.size();
}
/**
* Get the data item associated with the specified position in the data set.
*
* @param position Position of the item whose data we want within the adapter's
* data set.
* @return The data at the specified position.
*/
@Override
public Object getItem(int position) {
return cacheInfos.get(position);
}
/**
* Get the row id associated with the specified position in the list.
*
* @param position The position of the item within the adapter's data set whose row id we want.
* @return The id of the item at the specified position.
*/
@Override
public long getItemId(int position) {
return position;
}
/**
* Get a View that displays the data at the specified position in the data set. You can either
* create a View manually or inflate it from an XML layout file. When the View is inflated, the
* parent View (GridView, ListView...) will apply default layout parameters unless you use
* {@link LayoutInflater#inflate(int, ViewGroup, boolean)}
* to specify a root view and to prevent attachment to the root.
*
* @param position The position of the item within the adapter's data set of the item whose view
* we want.
* @param convertView The old view to reuse, if possible. Note: You should check that this view
* is non-null and of an appropriate type before using. If it is not possible to convert
* this view to display the correct data, this method can create a new view.
* Heterogeneous lists can specify their number of view types, so that this View is
* always of the right type (see {@link #getViewTypeCount()} and
* {@link #getItemViewType(int)}).
* @param parent The parent that this view will eventually be attached to
* @return A View corresponding to the data at the specified position.
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//设置缓存，提高效率
ViewHolder holder ;
View view;
if (convertView==null){
//一定要初始化
view = View.inflate(CleanCacheActivity.this, R.layout.item_clean_cache, null);
System.out.println("======================================================");
System.out.println("======================================================");
System.out.println("======================================================");
System.out.println("======================================================");
System.out.println("======================================================");
holder = new ViewHolder();
holder.imageView= (ImageView) view.findViewById(R.id.iv_cache_icon);
holder.tv_cache_size= (TextView) view.findViewById(R.id.tv_cache_size);
holder.tv_cache_name= (TextView) view.findViewById(R.id.tv_cache_name);
view.setTag(holder);
}else {
//通过tag找到缓存布局
view =convertView;
holder= (ViewHolder) view.getTag();
}
holder.imageView.setImageDrawable(cacheInfos.get(position).icon);
holder.tv_cache_name.setText(cacheInfos.get(position).AppName);
holder.tv_cache_size.setText("缓存："+cacheInfos.get(position).cacheSize);
return view;
}
}
private void getCacheSize(PackageInfo packageInfo) {
try {// Class<?> clazz = getClassLoader().loadClass("packageManager");
//通过反射获取到当前的方法
Method method = PackageManager.class.getDeclaredMethod("getPackageSizeInfo", String.class,IPackageStatsObserver.class);
method.invoke(packageManager,packageInfo.applicationInfo.packageName,new MyIPackageStatsObserver(packageInfo));
} catch (Exception e) {
e.printStackTrace();
}
}
private class MyIPackageStatsObserver extends IPackageStatsObserver.Stub{
private PackageInfo packageInfo;
MyIPackageStatsObserver(PackageInfo packageInfo) {
this.packageInfo=packageInfo;
}
@Override
public void onGetStatsCompleted(PackageStats pStats, boolean succeeded) throws RemoteException {
//获取到当前手机应用大小
long cacheSize = pStats.cacheSize;
//判断是否有缓存
if (cacheSize>0){
System.out.println("当前应用的名字："+packageInfo.applicationInfo.loadLabel(packageManager)+
" 缓存的大小： "+cacheSize);
CacheInfo cacheInfo = new CacheInfo();
Drawable icon= packageInfo.applicationInfo.loadIcon(packageManager);
cacheInfo.icon= icon;
String appName= packageInfo.applicationInfo.loadLabel(packageManager).toString();
cacheInfo.AppName = appName;
cacheInfo.cacheSize=cacheSize;
cacheInfos.add(cacheInfo);
}
}
}
//封装成一个对象
static class CacheInfo{
Drawable icon;
long cacheSize;
String AppName;
}
static class ViewHolder{
ImageView imageView;
TextView tv_cache_name;
TextView tv_cache_size;
}
}
