应用源码之PackageInstaller.zip

/* ** ** Copyright 2007, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** ** http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ package com.android.packageinstaller; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.PackageParser; import android.net.Uri; import android.os.Bundle; import android.provider.Settings; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.AppSecurityPermissions; import android.widget.Button; import android.widget.LinearLayout; /* * This activity is launched when a new application is installed via side loading * The package is first parsed and the user is notified of parse errors via a dialog. * If the package is successfully parsed, the user is notified to turn on the install unknown * applications setting. A memory check is made at this point and the user is notified of out * of memory conditions if any. If the package is already existing on the device, * a confirmation dialog (to replace the existing package) is presented to the user. * Based on the user response the package is then installed by launching InstallAppConfirm * sub activity. All state transitions are handled in this activity */ public class PackageInstallerActivity extends Activity implements OnCancelListener, OnClickListener { private static final String TAG = "PackageInstaller"; private Uri mPackageURI; private boolean localLOGV = false; PackageManager mPm; PackageParser.Package mPkgInfo; ApplicationInfo mSourceInfo; // ApplicationInfo object primarily used for already existing applications private ApplicationInfo mAppInfo = null; // View for install progress View mInstallConfirm; // Buttons to indicate user acceptance private Button mOk; private Button mCancel; static final String PREFS_ALLOWED_SOURCES = "allowed_sources"; // Dialog identifiers used in showDialog private static final int DLG_BASE = 0; private static final int DLG_REPLACE_APP = DLG_BASE + 1; private static final int DLG_UNKNOWN_APPS = DLG_BASE + 2; private static final int DLG_PACKAGE_ERROR = DLG_BASE + 3; private static final int DLG_OUT_OF_SPACE = DLG_BASE + 4; private static final int DLG_INSTALL_ERROR = DLG_BASE + 5; private static final int DLG_ALLOW_SOURCE = DLG_BASE + 6; private void startInstallConfirm() { LinearLayout permsSection = (LinearLayout) mInstallConfirm.findViewById(R.id.permissions_section); LinearLayout securityList = (LinearLayout) permsSection.findViewById( R.id.security_settings_list); boolean permVisible = false; if(mPkgInfo != null) { AppSecurityPermissions asp = new AppSecurityPermissions(this, mPkgInfo); if(asp.getPermissionCount() > 0) { permVisible = true; securityList.addView(asp.getPermissionsView()); } } if(!permVisible){ permsSection.setVisibility(View.INVISIBLE); } mInstallConfirm.setVisibility(View.VISIBLE); mOk = (Button)findViewById(R.id.ok_button); mCancel = (Button)findViewById(R.id.cancel_button); mOk.setOnClickListener(this); mCancel.setOnClickListener(this); } private void showDialogInner(int id) { // TODO better fix for this? Remove dialog so that it gets created again removeDialog(id); showDialog(id); } @Override public Dialog onCreateDialog(int id, Bundle bundle) { switch (id) { case DLG_REPLACE_APP: int msgId = R.string.dlg_app_replacement_statement; // Customized text for system apps if ((mAppInfo != null) && (mAppInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { msgId = R.string.dlg_sys_app_replacement_statement; } return new AlertDialog.Builder(this) .setTitle(R.string.dlg_app_replacement_title) .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { startInstallConfirm(); }}) .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.i(TAG, "Canceling installation"); setResult(RESULT_CANCELED); finish(); }}) .setMessage(msgId) .setOnCancelListener(this) .create(); case DLG_UNKNOWN_APPS: return new AlertDialog.Builder(this) .setTitle(R.string.unknown_apps_dlg_title) .setMessage(R.string.unknown_apps_dlg_text) .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.i(TAG, "Finishing off activity so that user can navigate to settings manually"); finish(); }}) .setPositiveButton(R.string.settings, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.i(TAG, "Launching settings"); launchSettingsAppAndFinish(); } }) .setOnCancelListener(this) .create(); case DLG_PACKAGE_ERROR : return new AlertDialog.Builder(this) .setTitle(R.string.Parse_error_dlg_title) .setMessage(R.string.Parse_error_dlg_text) .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { finish(); } }) .setOnCancelListener(this) .create(); case DLG_OUT_OF_SPACE: // Guaranteed not to be null. will default to package name if not set by app CharSequence appTitle = mPm.getApplicationLabel(mPkgInfo.applicationInfo); String dlgText = getString(R.string.out_of_space_dlg_text, appTitle.toString()); return new AlertDialog.Builder(this) .setTitle(R.string.out_of_space_dlg_title) .setMessage(dlgText) .setPositiveButton(R.string.manage_applications, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { //launch manage applications Intent intent = new Intent("android.intent.action.MANAGE_PACKAGE_STORAGE");