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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.internal.app;
     18 
     19 import com.android.internal.R;
     20 
     21 import android.app.Activity;
     22 import android.app.ActivityManagerNative;
     23 import android.content.Intent;
     24 import android.content.IntentSender;
     25 import android.content.pm.ApplicationInfo;
     26 import android.content.pm.PackageManager;
     27 import android.graphics.drawable.Drawable;
     28 import android.os.Bundle;
     29 import android.os.RemoteException;
     30 import android.util.Log;
     31 import android.util.TypedValue;
     32 import android.view.View;
     33 import android.view.Window;
     34 import android.view.View.OnClickListener;
     35 import android.widget.Button;
     36 import android.widget.ImageView;
     37 import android.widget.TextView;
     38 
     39 /**
     40  * This activity is displayed when the system attempts to start an Intent for
     41  * which there is more than one matching activity, allowing the user to decide
     42  * which to go to.  It is not normally used directly by application developers.
     43  */
     44 public class HeavyWeightSwitcherActivity extends Activity {
     45     /** The PendingIntent of the new activity being launched. */
     46     public static final String KEY_INTENT = "intent";
     47     /** Set if the caller is requesting a result. */
     48     public static final String KEY_HAS_RESULT = "has_result";
     49     /** Package of current heavy-weight app. */
     50     public static final String KEY_CUR_APP = "cur_app";
     51     /** Task that current heavy-weight activity is running in. */
     52     public static final String KEY_CUR_TASK = "cur_task";
     53     /** Package of newly requested heavy-weight app. */
     54     public static final String KEY_NEW_APP = "new_app";
     55 
     56     IntentSender mStartIntent;
     57     boolean mHasResult;
     58     String mCurApp;
     59     int mCurTask;
     60     String mNewApp;
     61 
     62     @Override
     63     protected void onCreate(Bundle savedInstanceState) {
     64         super.onCreate(savedInstanceState);
     65 
     66         requestWindowFeature(Window.FEATURE_LEFT_ICON);
     67 
     68         mStartIntent = (IntentSender)getIntent().getParcelableExtra(KEY_INTENT);
     69         mHasResult = getIntent().getBooleanExtra(KEY_HAS_RESULT, false);
     70         mCurApp = getIntent().getStringExtra(KEY_CUR_APP);
     71         mCurTask = getIntent().getIntExtra(KEY_CUR_TASK, 0);
     72         mNewApp = getIntent().getStringExtra(KEY_NEW_APP);
     73 
     74         setContentView(com.android.internal.R.layout.heavy_weight_switcher);
     75 
     76         setIconAndText(R.id.old_app_icon, R.id.old_app_action, R.id.old_app_description,
     77                 mCurApp, R.string.old_app_action, R.string.old_app_description);
     78         setIconAndText(R.id.new_app_icon, R.id.new_app_action, R.id.new_app_description,
     79                 mNewApp, R.string.new_app_action, R.string.new_app_description);
     80 
     81         View button = findViewById((R.id.switch_old));
     82         button.setOnClickListener(mSwitchOldListener);
     83         button = findViewById((R.id.switch_new));
     84         button.setOnClickListener(mSwitchNewListener);
     85         button = findViewById((R.id.cancel));
     86         button.setOnClickListener(mCancelListener);
     87 
     88         TypedValue out = new TypedValue();
     89         getTheme().resolveAttribute(android.R.attr.alertDialogIcon, out, true);
     90         getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
     91                 out.resourceId);
     92     }
     93 
     94     void setText(int id, CharSequence text) {
     95         ((TextView)findViewById(id)).setText(text);
     96     }
     97 
     98     void setDrawable(int id, Drawable dr) {
     99         if (dr != null) {
    100             ((ImageView)findViewById(id)).setImageDrawable(dr);
    101         }
    102     }
    103 
    104     void setIconAndText(int iconId, int actionId, int descriptionId,
    105             String packageName, int actionStr, int descriptionStr) {
    106         CharSequence appName = "";
    107         Drawable appIcon = null;
    108         if (mCurApp != null) {
    109             try {
    110                 ApplicationInfo info = getPackageManager().getApplicationInfo(
    111                         packageName, 0);
    112                 appName = info.loadLabel(getPackageManager());
    113                 appIcon = info.loadIcon(getPackageManager());
    114             } catch (PackageManager.NameNotFoundException e) {
    115             }
    116         }
    117 
    118         setDrawable(iconId, appIcon);
    119         setText(actionId, getString(actionStr, appName));
    120         setText(descriptionId, getText(descriptionStr));
    121     }
    122 
    123     private OnClickListener mSwitchOldListener = new OnClickListener() {
    124         public void onClick(View v) {
    125             try {
    126                 ActivityManagerNative.getDefault().moveTaskToFront(mCurTask, 0, null);
    127             } catch (RemoteException e) {
    128             }
    129             finish();
    130         }
    131     };
    132 
    133     private OnClickListener mSwitchNewListener = new OnClickListener() {
    134         public void onClick(View v) {
    135             try {
    136                 ActivityManagerNative.getDefault().finishHeavyWeightApp();
    137             } catch (RemoteException e) {
    138             }
    139             try {
    140                 if (mHasResult) {
    141                     startIntentSenderForResult(mStartIntent, -1, null,
    142                             Intent.FLAG_ACTIVITY_FORWARD_RESULT,
    143                             Intent.FLAG_ACTIVITY_FORWARD_RESULT, 0);
    144                 } else {
    145                     startIntentSenderForResult(mStartIntent, -1, null, 0, 0, 0);
    146                 }
    147             } catch (IntentSender.SendIntentException ex) {
    148                 Log.w("HeavyWeightSwitcherActivity", "Failure starting", ex);
    149             }
    150             finish();
    151         }
    152     };
    153 
    154     private OnClickListener mCancelListener = new OnClickListener() {
    155         public void onClick(View v) {
    156             finish();
    157         }
    158     };
    159 }
    160