android緩存清除工具,Android工具開發一（清除手機所有app緩存）

Android手機緩存的清理

步驟

1.擷取手機所有app緩存2.清理緩存3.擷取所有app緩存(檢查第二步是否成功)代碼

package com.pythoncat.clearcache;

import android.content.pm.IPackageDataObserver;

import android.content.pm.IPackageStatsObserver;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

import android.content.pm.PackageStats;

import android.os.Bundle;

import android.os.Handler;

import android.os.RemoteException;

import android.support.v7.app.AppCompatActivity;

import android.text.format.Formatter;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

import java.lang.reflect.Method;

import java.util.List;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private TextView tvShowCaches, tvAppCache;

private Button btnScanCache, btnClearAll;

private PackageManager pm;

StringBuilder sb = new StringBuilder();

StringBuilder sbCache = new StringBuilder();

private long cacheS;

Handler mHadler = new Handler();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

btnScanCache = (Button) findViewById(R.id.btn_scanCache);

btnClearAll = (Button) findViewById(R.id.btn_clearAll);

tvShowCaches = (TextView) findViewById(R.id.tv_showAppInfo);

tvAppCache = (TextView) findViewById(R.id.tv_appCache);

sbCache.append("所有緩存：\n");

tvAppCache.setText(sbCache.toString());

btnScanCache.setOnClickListener(this);

btnClearAll.setOnClickListener(this);

}

@Override

public void onClick(View v) {

cacheS = 0;

if (v.getId() == btnScanCache.getId()) {

getCaches();

//            ==========擷取每個app的緩存

} else if (v.getId() == btnClearAll.getId()) {

cleanAll(v);

getCaches();

}

}

class MyPackageStateObserver extends IPackageStatsObserver.Stub {

@Override

public void onGetStatsCompleted(PackageStats pStats, boolean succeeded) throws RemoteException {

String packageName = pStats.packageName;

long cacheSize = pStats.cacheSize;

long codeSize = pStats.codeSize;

long dataSize = pStats.dataSize;

cacheS += cacheSize;

//            sb.delete(0, sb.length());

if (cacheSize > 0) {

sb.append("packageName = " + packageName + "\n")

.append("   cacheSize: " + cacheSize + "\n")

.append("   dataSize: " + dataSize + "\n")

.append("-----------------------\n")

;

Log.e("aaaa", sb.toString());

}

}

}

class ClearCacheObj extends IPackageDataObserver.Stub {

@Override

public void onRemoveCompleted(String packageName, final boolean succeeded) throws RemoteException {

mHadler.post(new Runnable() {

@Override

public void run() {

Toast.makeText(getApplicationContext(), "清楚狀态： " + succeeded, Toast.LENGTH_SHORT).show();

}

});

}

}

public void cleanAll(View view) {

//freeStorageAndNotify

Method[] methods = PackageManager.class.getMethods();

for (Method method : methods) {

if ("freeStorageAndNotify".equals(method.getName())) {

try {

method.invoke(pm, Long.MAX_VALUE, new ClearCacheObj());

} catch (Exception e) {

e.printStackTrace();

}

return;

}

}

}

private void getCaches(){

// scan

pm = getPackageManager();

List packages = pm.getInstalledPackages(0);

int max = packages.size();

int current = 0;

sb.delete(0, sb.length());

sb.append("所有已安裝的app資訊：\n");

sb.append("所有App 總和：" + max + " \n");

tvShowCaches.setText(sb.toString());

for (PackageInfo pinfo : packages) {

String packageName = pinfo.packageName;

try {

Method getPackageSizeInfo = PackageManager.class

.getDeclaredMethod("getPackageSizeInfo", String.class, IPackageStatsObserver.class);

getPackageSizeInfo.invoke(pm, packageName, new MyPackageStateObserver());

current++;

} catch (Exception e) {

current++;

e.printStackTrace();

}

}

//===到這裡，資料準備完成

mHadler.postDelayed(new Runnable() {

@Override

public void run() {

Toast.makeText(getApplicationContext(),"緩存資訊擷取完成",Toast.LENGTH_SHORT).show();

sbCache.append(Formatter.formatFileSize(getApplicationContext(),cacheS)+"\n");

tvShowCaches.setText(sb.toString());

tvAppCache.setText(sbCache.toString());

sbCache.delete(0,sbCache.length());

}

}, 1000);

//ok,所有應用程式資訊顯示完成

}

}

所需權限

4.所需AIDL檔案

android/content/pm/IPackageDataObserver.aidl

android/content/pm/IPackageStatsObserver.aidl

android/content/pm/PackageStats.aidl

*1.PackageStats.aidl

package android.content.pm;

parcelable PackageStats;

* 2.IPackageDataObserver

package android.content.pm;

oneway interface IPackageDataObserver {

void onRemoveCompleted(in String packageName, boolean succeeded);

}

* 3.IPackageStatsObserver

package android.content.pm;

import android.content.pm.PackageStats;

oneway interface IPackageStatsObserver {

void onGetStatsCompleted(in PackageStats pStats, boolean succeeded);

}

5.運作環境 Android 5.06.開發環境 Android Studio7.運作效果，OK。8.完整項目已上傳csdn，下載下傳位址