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      1 /*
      2 **
      3 ** Copyright 2007, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 package com.android.packageinstaller;
     18 
     19 import com.android.packageinstaller.R;
     20 import android.app.Activity;
     21 import android.app.AlertDialog;
     22 import android.app.Dialog;
     23 import android.content.DialogInterface;
     24 import android.content.Intent;
     25 import android.content.pm.ApplicationInfo;
     26 import android.content.pm.PackageManager;
     27 import android.net.Uri;
     28 import android.os.Bundle;
     29 import android.util.Log;
     30 import android.view.View;
     31 import android.view.Window;
     32 import android.view.View.OnClickListener;
     33 import android.widget.Button;
     34 import android.widget.TextView;
     35 import android.content.pm.PackageManager.NameNotFoundException;
     36 
     37 /*
     38  * This activity presents UI to uninstall an application. Usually launched with intent
     39  * Intent.ACTION_UNINSTALL_PKG_COMMAND and attribute
     40  * com.android.packageinstaller.PackageName set to the application package name
     41  */
     42 public class UninstallerActivity extends Activity implements OnClickListener,
     43         DialogInterface.OnCancelListener {
     44     private static final String TAG = "UninstallerActivity";
     45     private boolean localLOGV = false;
     46     PackageManager mPm;
     47     private ApplicationInfo mAppInfo;
     48     private Button mOk;
     49     private Button mCancel;
     50 
     51     // Dialog identifiers used in showDialog
     52     private static final int DLG_BASE = 0;
     53     private static final int DLG_APP_NOT_FOUND = DLG_BASE + 1;
     54     private static final int DLG_UNINSTALL_FAILED = DLG_BASE + 2;
     55 
     56     @Override
     57     public Dialog onCreateDialog(int id) {
     58         switch (id) {
     59         case DLG_APP_NOT_FOUND :
     60             return new AlertDialog.Builder(this)
     61                     .setTitle(R.string.app_not_found_dlg_title)
     62                     .setIcon(com.android.internal.R.drawable.ic_dialog_alert)
     63                     .setMessage(R.string.app_not_found_dlg_text)
     64                     .setNeutralButton(getString(R.string.dlg_ok),
     65                             new DialogInterface.OnClickListener() {
     66                                 public void onClick(DialogInterface dialog, int which) {
     67                                     finish();
     68                                 }})
     69                     .create();
     70         case DLG_UNINSTALL_FAILED :
     71             // Guaranteed not to be null. will default to package name if not set by app
     72            CharSequence appTitle = mPm.getApplicationLabel(mAppInfo);
     73            String dlgText = getString(R.string.uninstall_failed_msg,
     74                     appTitle.toString());
     75             // Display uninstall failed dialog
     76             return new AlertDialog.Builder(this)
     77                     .setTitle(R.string.uninstall_failed)
     78                     .setIcon(com.android.internal.R.drawable.ic_dialog_alert)
     79                     .setMessage(dlgText)
     80                     .setNeutralButton(getString(R.string.dlg_ok),
     81                             new DialogInterface.OnClickListener() {
     82                                 public void onClick(DialogInterface dialog, int which) {
     83                                     finish();
     84                                 }})
     85                     .create();
     86         }
     87         return null;
     88     }
     89 
     90     private void startUninstallProgress() {
     91         Intent newIntent = new Intent(Intent.ACTION_VIEW);
     92         newIntent.putExtra(PackageUtil.INTENT_ATTR_APPLICATION_INFO,
     93                                                   mAppInfo);
     94         newIntent.setClass(this, UninstallAppProgress.class);
     95         startActivity(newIntent);
     96         finish();
     97     }
     98 
     99     @Override
    100     public void onCreate(Bundle icicle) {
    101         super.onCreate(icicle);
    102         //get intent information
    103         final Intent intent = getIntent();
    104         Uri packageURI = intent.getData();
    105         String packageName = packageURI.getEncodedSchemeSpecificPart();
    106         if(packageName == null) {
    107             Log.e(TAG, "Invalid package name:"+packageName);
    108             showDialog(DLG_APP_NOT_FOUND);
    109             return;
    110         }
    111         //initialize package manager
    112         mPm = getPackageManager();
    113         boolean errFlag = false;
    114         try {
    115             mAppInfo = mPm.getApplicationInfo(packageName, PackageManager.GET_UNINSTALLED_PACKAGES);
    116         } catch (NameNotFoundException e) {
    117             errFlag = true;
    118         }
    119         if(mAppInfo == null || errFlag) {
    120             Log.e(TAG, "Invalid application:"+packageName);
    121             showDialog(DLG_APP_NOT_FOUND);
    122         } else {
    123             requestWindowFeature(Window.FEATURE_NO_TITLE);
    124             //set view
    125             setContentView(R.layout.uninstall_confirm);
    126             TextView question = (TextView) findViewById(R.id.uninstall_question);
    127             TextView confirm = (TextView) findViewById(R.id.uninstall_confirm_text);
    128             if ((mAppInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0) {
    129                 question.setText(R.string.uninstall_update_question);
    130                 confirm.setText(R.string.uninstall_update_text);
    131             } else {
    132                 question.setText(R.string.uninstall_application_question);
    133                 confirm.setText(R.string.uninstall_application_text);
    134             }
    135             PackageUtil.initSnippetForInstalledApp(this, mAppInfo, R.id.app_snippet);
    136             //initialize ui elements
    137             mOk = (Button)findViewById(R.id.ok_button);
    138             mCancel = (Button)findViewById(R.id.cancel_button);
    139             mOk.setOnClickListener(this);
    140             mCancel.setOnClickListener(this);
    141         }
    142     }
    143 
    144     public void onClick(View v) {
    145         if(v == mOk) {
    146             //initiate next screen
    147             startUninstallProgress();
    148         } else if(v == mCancel) {
    149             finish();
    150         }
    151     }
    152 
    153     public void onCancel(DialogInterface dialog) {
    154         finish();
    155     }
    156 }
    157