我在/storage/emulated/0/Download/app-debug.apk中有一个APK文件。我想通过FileProvider安装此文件，因为我正在使用AndroidN。
当我尝试启动Intent Logcat时，没有显示任何错误，但是我在手机上收到以下消息：
解析软件包时出现问题。
我究竟做错了什么？
主要活动
public class MainActivity extends AppCompatActivity {
Button btnStartIntent;
String strRootPathInternalStorage = Environment.getExternalStorageDirectory().toString(); //-> /storage/emulated/0 //-> /storage/emulated/0/Download/
String strApkToInstall = "app-debug.apk";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
--> Booooh bad way! <--
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
*/
btnStartIntent = (Button)findViewById(R.id.btnStartIntent);
btnStartIntent.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
installApk(MainActivity.this, strRootPathInternalStorage+"/Download/"+strApkToInstall);
}
});
}
public static void installApk(Context context, String apkPath) {
if (context == null || TextUtils.isEmpty(apkPath)) {
return;
}
File file = new File(apkPath);
Intent intent = new Intent(Intent.ACTION_VIEW);
if (Build.VERSION.SDK_INT >= 24) {
//provider authorities
Uri apkUri = FileProvider.getUriForFile(context, "com.spicysoftware.test.provider", file);
//Granting Temporary Permissions to a URI
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
} else {
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
}
context.startActivity(intent);
}
}
表现
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.spicysoftware.test.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
provider_paths.xml
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="Download" path="Download" />
</paths>
对于有相同问题的任何人。我必须使用getExternalFilesDir（）指定确切的文件夹；
主要活动
public class MainActivity extends AppCompatActivity {
Button btnStartIntentFileProvider;
String strRootPathInternalStorage = Environment.getExternalStorageDirectory().toString();
String strApkToInstall = "app-debug.apk";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnStartIntentFileProvider = (Button)findViewById(R.id.btnFileProvider);
btnStartIntentFileProvider.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
File fileApkToInstall = new File(getExternalFilesDir("Download"), strApkToInstall);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri apkUri = FileProvider.getUriForFile(MainActivity.this, BuildConfig.APPLICATION_ID + ".provider", fileApkToInstall);
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(apkUri);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
MainActivity.this.startActivity(intent);
} else {
Uri apkUri = Uri.fromFile(fileApkToInstall);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
MainActivity.this.startActivity(intent);
}
}
});
}
}
表现
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.spicysoftware.test">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.spicysoftware.test.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
provider_paths（在XML文件夹中）
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-files-path name="Download" path="Download/" />
</paths>
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