我試圖從外部apk文件啓動活動。 apk文件是一個簡單的文本顯示,我從URL下載到/ mnt/sdcard /中的本地掛載目錄中。一切工作正常到這一點。 現在,我想從該文件開始一個活動,並且出現錯誤。兩種類型,取決於意圖的建設。下面是與關聯的LogCat的兩個實現,'targetFilePath'是相同的。 案例一:從apk文件開始活動
try {
Intent install = new Intent(Intent.ACTION_VIEW)
.setData(Uri.fromFile(new File(targetFilePath)))
.setType("application/vnd.android.package-archive");
startActivity(install);
}
catch (Exception e) {
e.printStackTrace();
Toast.makeText(DownloadFile.this, "apk file launch error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
的logcat的:
08-26 17:03:02.153: I/ActivityManager(59): Starting activity: Intent { act=android.intent.action.VIEW typ=application/vnd.android.package-archive }
08-26 17:03:02.153: W/System.err(390): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW typ=application/vnd.android.package-archive }
08-26 17:03:02.162: W/System.err(390): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1408)
08-26 17:03:02.162: W/System.err(390): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
08-26 17:03:02.162: W/System.err(390): at android.app.Activity.startActivityForResult(Activity.java:2817)
08-26 17:03:02.162: W/System.err(390): at android.app.Activity.startActivity(Activity.java:2923)
08-26 17:03:02.162: W/System.err(390): at com.agorasoft.sandbox.DownloadFile$1.onClick(DownloadFile.java:137)
08-26 17:03:02.162: W/System.err(390): at android.view.View.performClick(View.java:2408)
08-26 17:03:02.172: W/System.err(390): at android.view.View$PerformClick.run(View.java:8816)
08-26 17:03:02.172: W/System.err(390): at android.os.Handler.handleCallback(Handler.java:587)
08-26 17:03:02.172: W/System.err(390): at android.os.Handler.dispatchMessage(Handler.java:92)
08-26 17:03:02.172: W/System.err(390): at android.os.Looper.loop(Looper.java:123)
08-26 17:03:02.182: W/System.err(390): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-26 17:03:02.182: W/System.err(390): at java.lang.reflect.Method.invokeNative(Native Method)
08-26 17:03:02.182: W/System.err(390): at java.lang.reflect.Method.invoke(Method.java:521)
08-26 17:03:02.182: W/System.err(390): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-26 17:03:02.182: W/System.err(390): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-26 17:03:02.182: W/System.err(390): at dalvik.system.NativeStart.main(Native Method)
08-26 17:03:21.761: D/SntpClient(59): request time failed: java.net.SocketException: Address family not supported by protocol
案例二:
try {
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri apkUri = Uri.fromFile(new File(targetFilePath));
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
startActivity(intent);
}
catch (Exception e) {
e.printStackTrace();
Toast.makeText(DownloadFile.this, "apk file launch error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
解析錯誤彈出窗口:有解析包
問題The LogCat:
08-26 17:09:48.862: W/PackageParser(329): Unable to read AndroidManifest.xml of /mnt/sdcard/Downloads/ApkTest.apk
08-26 17:09:48.862: W/PackageParser(329): java.io.FileNotFoundException: AndroidManifest.xml
08-26 17:09:48.862: W/PackageParser(329): at android.content.res.AssetManager.openXmlAssetNative(Native Method)
08-26 17:09:48.862: W/PackageParser(329): at android.content.res.AssetManager.openXmlBlockAsset(AssetManager.java:485)
08-26 17:09:48.862: W/PackageParser(329): at android.content.res.AssetManager.openXmlResourceParser(AssetManager.java:453)
08-26 17:09:48.862: W/PackageParser(329): at android.content.pm.PackageParser.parsePackage(PackageParser.java:396)
08-26 17:09:48.862: W/PackageParser(329): at com.android.packageinstaller.PackageUtil.getPackageInfo(PackageUtil.java:79)
08-26 17:09:48.862: W/PackageParser(329): at com.android.packageinstaller.PackageInstallerActivity.onCreate(PackageInstallerActivity.java:242)
08-26 17:09:48.862: W/PackageParser(329): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-26 17:09:48.862: W/PackageParser(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-26 17:09:48.862: W/PackageParser(329): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-26 17:09:48.862: W/PackageParser(329): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-26 17:09:48.862: W/PackageParser(329): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-26 17:09:48.862: W/PackageParser(329): at android.os.Handler.dispatchMessage(Handler.java:99)
08-26 17:09:48.862: W/PackageParser(329): at android.os.Looper.loop(Looper.java:123)
08-26 17:09:48.862: W/PackageParser(329): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-26 17:09:48.862: W/PackageParser(329): at java.lang.reflect.Method.invokeNative(Native Method)
08-26 17:09:48.862: W/PackageParser(329): at java.lang.reflect.Method.invoke(Method.java:521)
08-26 17:09:48.862: W/PackageParser(329): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-26 17:09:48.862: W/PackageParser(329): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-26 17:09:48.862: W/PackageParser(329): at dalvik.system.NativeStart.main(Native Method)
08-26 17:09:48.862: W/PackageInstaller(329): Parse error when parsing manifest. Discontinuing installation
08-26 17:09:49.902: I/ActivityManager(59): Displayed activity com.android.packageinstaller/.PackageInstallerActivity: 1168 ms (total 1168 ms)
對不起,冗長的參數,但它似乎很奇怪,首先,它不起作用,然後我有意圖/安裝定義的兩種語法不同的行爲。 調用應用程序和apk文件都具有相同的SDK目標/分鐘版本。調用應用程序清單中沒有爲這段代碼設置特殊權限(我是否需要任何?)。 感謝
第二種情況似乎是正確的,但是您下載的apk文件已損壞,這就是爲什麼它會崩潰 – nandeesh
謝謝nandeesh。下載的文件確實損壞了,我無法想象它是由此產生的,但是一個簡單的cmp檢查立即啓動了它。 –