由于手机内存有限,有时需要一次删除很多个包,这时就需要一个实现Android包批量删除的应用。
首先是布局文件:
class="brush:java;gutter:true;"><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="5" > <TextView android:id="@+id/textView1" style="@style/my_style" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_weight="4" /> <TextView android:id="@+id/textView2" style="@style/my_style" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_gravity="center_vertical|center_horizontal" android:layout_weight="1" android:gravity="center_vertical|center_horizontal" android:text="应用名称" /> <TextView android:id="@+id/textView3" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_weight="4" android:gravity="center_vertical|center_horizontal" android:text="是否系统应用" /> </LinearLayout> <ListView android:id="@id/android:list" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="1" > </ListView> <Button android:id="@+id/btn_apk" style="@style/my_style" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="5" android:text="卸载" /> </LinearLayout>
布局文件相对简单,最重要的是列表。
然后是类文件:
package com.hzhi.sysinfor; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.AlertDialog; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class apk<PackageDeleteObserver> extends ListActivity{ Button btn_unload; PackageManager pkg_man; PackageDeleteObserver pkg_obs; list_apk list_ada; // 获得所有的应用列表 public void get_app(){ list_ada = new list_apk(this); // 包管理器 PackageManager pm = getPackageManager(); // 获取手机内所有应用 List<PackageInfo> pi = pm.getInstalledPackages(0); for (int i=0; i<pi.size(); i++){ PackageInfo pii = (PackageInfo) pi.get(i); String is_sys; Drawable icon; // 是否系统应用 if ((pii.applicationInfo.flags & pii.applicationInfo.FLAG_SYSTEM) <= 0) is_sys = "否"; else is_sys = "是"; if (pii.applicationInfo.loadIcon(pm) != null) icon = (Drawable)pii.applicationInfo.loadIcon(pm); else icon = (Drawable) getResources().getDrawable(R.drawable.ic_launcher); list_ada.addItem(String.valueOf(pii.applicationInfo.loadLabel(pm)), is_sys, icon, pii.applicationInfo.packageName, false); } setListAdapter(list_ada); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_list_apk); get_app(); btn_unload = (Button) findViewById(R.id.btn_apk); btn_unload.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { for (int j=0; j<list_ada.list_data.size(); j++){ // 该应用需要删除 if (list_ada.list_data.get(j).is_chk){ String name = (String) list_ada.list_data.get(j).
txt_name.getText(); final String pak = list_ada.list_data.get(j).item_pak; new AlertDialog.Builder(apk.this) .setTitle("删除应用") .setMessage("确定删除" + name + "吗?") .setPositiveButton("是",
new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1)
{ unload(pak); get_app(); } }) .setNegativeButton("否", null) .show(); } } } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } public boolean unload (String n){ boolean res = true; try{ // 通过包名创建URI Uri pu = Uri.parse("package:" + n); // 创建Intent Intent i = new Intent(Intent.ACTION_DELETE, pu); // 执行卸载程序 startActivity(i); res = true; } catch(Exception e){ res = false; } finally{ return res; } } } //apk列表 class list_apk extends BaseAdapter implements OnClickListener{ public Context ctx; public List<item_apk> list_data; public list_apk(Context context){ ctx = context; list_data = new ArrayList<item_apk>(); } @Override public int getCount() { // TODO Auto-generated method stub return list_data.size(); } @Override public Object getItem(int arg0) { // TODO Auto-generated method stub return list_data.get(arg0); } @Override public long getItemId(int arg0) { // TODO Auto-generated method stub return list_data.indexOf(arg0); } @Override public View getView(int position, View convertView, ViewGroup parent) { item_apk my_item; Integer i = 0; if (convertView == null) { my_item = new item_apk(ctx, (String)list_data.get(position).txt_name.getText(), (String)list_data.get(position).txt_flag.getText(), list_data.get(position).img_apk.getDrawable(), list_data.get(position).item_pak, list_data.get(position).is_chk); } else { my_item = (item_apk)convertView; my_item.txt_name.setText(list_data.get(position).txt_name.getText()); my_item.txt_flag.setText(list_data.get(position).txt_flag.getText()); my_item.img_apk.setImageDrawable(list_data.get(position).img_apk.getDrawable()); } CheckBox chk_item = (CheckBox) my_item.chk_apk; chk_item.setOnClickListener(this); if (list_data.get(position).is_chk) Log.i(String.valueOf(position) + ".is_chk=", "true"); else Log.i(String.valueOf(position) + ".is_chk=", "false"); chk_item.setChecked(list_data.get(position).is_chk); chk_item.setTag(position); return my_item; } public void addItem(String txt_name, String txt_flag, Drawable ico_apk, String str_name, Boolean bol_chk) { list_data.add(new item_apk(ctx,txt_name,txt_flag,ico_apk,str_name,bol_chk)); } @Override public void onClick(View v) { // TODO Auto-generated method stub CheckBox c = (CheckBox) v; int pos = Integer.parseInt(v.getTag().toString()); list_data.get(pos).is_chk = c.isChecked(); } } //apk列表的一行 class item_apk extends LinearLayout{ public CheckBox chk_apk; public TextView txt_name; public TextView txt_flag; public ImageView img_apk; public String item_pak; public boolean is_chk; public item_apk(Context ctx, String item_name, String item_flag, Drawable item_draw, String str_name, Boolean bol_chk) { super(ctx); this.setOrientation(HORIZONTAL); int hei = 60; chk_apk = new CheckBox(ctx); addView(chk_apk, new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei)); img_apk = new ImageView(ctx); img_apk.setImageDrawable(item_draw); addView(img_apk, new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei)); txt_name = new TextView(ctx); txt_name.setText(item_name); addView(txt_name, new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.4),hei)); txt_flag = new TextView(ctx); txt_flag.setText(item_flag); addView(txt_flag, new LinearLayout.LayoutParams((int)(MainActivity.wid_scr*0.2),hei)); item_pak = str_name; is_chk = bol_chk; } }
一共实现了三个类:apk、list_apk、item_apk。apk是整个Activity的类,list_apk是列表的适配器类,item_apk是列表中一行的类。list_apk的list_data是重要的变量,它记录了每一个包的信息,如包名、是否是系统应用、是否被选中等。
点击“卸载”按钮时,遍历list_data的所有元素,判断是否被选中,如果被选中,就删除。
运行效果如下:
可见,选中的两个包已经被删除。