可以从自定义Android应用程序中以编程方式安装动态下载的apk。
当前回答
在Android Oreo及以上版本中，我们必须采用不同的方法以编程方式安装apk。
private void installApkProgramatically() {
try {
File path = activity.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
File file = new File(path, filename);
Uri uri;
if (file.exists()) {
Intent unKnownSourceIntent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).setData(Uri.parse(String.format("package:%s", activity.getPackageName())));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
if (!activity.getPackageManager().canRequestPackageInstalls()) {
startActivityForResult(unKnownSourceIntent, Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE);
} else {
Uri fileUri = FileProvider.getUriForFile(activity.getBaseContext(), activity.getApplicationContext().getPackageName() + ".provider", file);
Intent intent = new Intent(Intent.ACTION_VIEW, fileUri);
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.setDataAndType(fileUri, "application/vnd.android" + ".package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(intent);
alertDialog.dismiss();
}
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Intent intent1 = new Intent(Intent.ACTION_INSTALL_PACKAGE);
uri = FileProvider.getUriForFile(activity.getApplicationContext(), BuildConfig.APPLICATION_ID + ".provider", file);
activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent1.setDataAndType(uri,
"application/*");
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent1.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent1.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
startActivity(intent1);
} else {
Intent intent = new Intent(Intent.ACTION_VIEW);
uri = Uri.fromFile(file);
intent.setDataAndType(uri,
"application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
} else {
Log.i(TAG, " file " + file.getPath() + " does not exist");
}
} catch (Exception e) {
Log.i(TAG, "" + e.getMessage());
}
}
在Oreo及以上版本中，我们需要未知资源安装权限。所以在活动结果中，你必须检查结果的权限
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE:
switch (resultCode) {
case Activity.RESULT_OK:
installApkProgramatically();
break;
case Activity.RESULT_CANCELED:
//unknown resouce installation cancelled
break;
}
break;
}
}
其他回答
File file = new File(dir, "App.apk");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
我也遇到过同样的问题，在尝试了几次之后，结果是这样的。我不知道为什么，但是分别设置数据和类型破坏了我的意图。
我只是想分享一个事实，我的apk文件保存到我的应用程序“数据”目录，我需要更改apk文件的权限，使其成为世界可读的，以便允许它以这种方式安装，否则系统会抛出“解析错误:解析包存在问题”;所以使用@Horaceman的解决方案，使:
File file = new File(dir, "App.apk");
file.setReadable(true, false);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
不要忘记申请权限:
android.Manifest.permission.WRITE_EXTERNAL_STORAGE
android.Manifest.permission.READ_EXTERNAL_STORAGE
在AndroidManifest.xml中添加提供商和权限:
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
...
<application>
...
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
</application>
创建XML文件提供程序res/ XML /provider_paths.xml
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path
name="external"
path="." />
<external-files-path
name="external_files"
path="." />
<cache-path
name="cache"
path="." />
<external-cache-path
name="external_cache"
path="." />
<files-path
name="files"
path="." />
</paths>
使用下面的示例代码:
public class InstallManagerApk extends AppCompatActivity {
static final String NAME_APK_FILE = "some.apk";
public static final int REQUEST_INSTALL = 0;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// required permission:
// android.Manifest.permission.WRITE_EXTERNAL_STORAGE
// android.Manifest.permission.READ_EXTERNAL_STORAGE
installApk();
}
...
/**
* Install APK File
*/
private void installApk() {
try {
File filePath = Environment.getExternalStorageDirectory();// path to file apk
File file = new File(filePath, LoadManagerApkFile.NAME_APK_FILE);
Uri uri = getApkUri( file.getPath() ); // get Uri for each SDK Android
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData( uri );
intent.setFlags( Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_ACTIVITY_NEW_TASK );
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME, getApplicationInfo().packageName);
if ( getPackageManager().queryIntentActivities(intent, 0 ) != null ) {// checked on start Activity
startActivityForResult(intent, REQUEST_INSTALL);
} else {
throw new Exception("don`t start Activity.");
}
} catch ( Exception e ) {
Log.i(TAG + ":InstallApk", "Failed installl APK file", e);
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG)
.show();
}
}
/**
* Returns a Uri pointing to the APK to install.
*/
private Uri getApkUri(String path) {
// Before N, a MODE_WORLD_READABLE file could be passed via the ACTION_INSTALL_PACKAGE
// Intent. Since N, MODE_WORLD_READABLE files are forbidden, and a FileProvider is
// recommended.
boolean useFileProvider = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
String tempFilename = "tmp.apk";
byte[] buffer = new byte[16384];
int fileMode = useFileProvider ? Context.MODE_PRIVATE : Context.MODE_WORLD_READABLE;
try (InputStream is = new FileInputStream(new File(path));
FileOutputStream fout = openFileOutput(tempFilename, fileMode)) {
int n;
while ((n = is.read(buffer)) >= 0) {
fout.write(buffer, 0, n);
}
} catch (IOException e) {
Log.i(TAG + ":getApkUri", "Failed to write temporary APK file", e);
}
if (useFileProvider) {
File toInstall = new File(this.getFilesDir(), tempFilename);
return FileProvider.getUriForFile(this, BuildConfig.APPLICATION_ID, toInstall);
} else {
return Uri.fromFile(getFileStreamPath(tempFilename));
}
}
/**
* Listener event on installation APK file
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQUEST_INSTALL) {
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this,"Install succeeded!", Toast.LENGTH_SHORT).show();
} else if (resultCode == Activity.RESULT_CANCELED) {
Toast.makeText(this,"Install canceled!", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this,"Install Failed!", Toast.LENGTH_SHORT).show();
}
}
}
...
}
试试这个 -在舱单上填写:
uses-permission android:name="android.permission.INSTALL_PACKAGES"
tools:ignore="ProtectedPermissions"
编写代码:
File sdCard = Environment.getExternalStorageDirectory();
String fileStr = sdCard.getAbsolutePath() + "/Download";// + "app-release.apk";
File file = new File(fileStr, "app-release.apk");
Intent promptInstall = new Intent(Intent.ACTION_VIEW).setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");
startActivity(promptInstall);
在Android Oreo及以上版本中，我们必须采用不同的方法以编程方式安装apk。
private void installApkProgramatically() {
try {
File path = activity.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
File file = new File(path, filename);
Uri uri;
if (file.exists()) {
Intent unKnownSourceIntent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).setData(Uri.parse(String.format("package:%s", activity.getPackageName())));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
if (!activity.getPackageManager().canRequestPackageInstalls()) {
startActivityForResult(unKnownSourceIntent, Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE);
} else {
Uri fileUri = FileProvider.getUriForFile(activity.getBaseContext(), activity.getApplicationContext().getPackageName() + ".provider", file);
Intent intent = new Intent(Intent.ACTION_VIEW, fileUri);
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.setDataAndType(fileUri, "application/vnd.android" + ".package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(intent);
alertDialog.dismiss();
}
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Intent intent1 = new Intent(Intent.ACTION_INSTALL_PACKAGE);
uri = FileProvider.getUriForFile(activity.getApplicationContext(), BuildConfig.APPLICATION_ID + ".provider", file);
activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
activity.grantUriPermission("com.abcd.xyz", uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent1.setDataAndType(uri,
"application/*");
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent1.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent1.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
startActivity(intent1);
} else {
Intent intent = new Intent(Intent.ACTION_VIEW);
uri = Uri.fromFile(file);
intent.setDataAndType(uri,
"application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
} else {
Log.i(TAG, " file " + file.getPath() + " does not exist");
}
} catch (Exception e) {
Log.i(TAG, "" + e.getMessage());
}
}
在Oreo及以上版本中，我们需要未知资源安装权限。所以在活动结果中，你必须检查结果的权限
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case Constant.UNKNOWN_RESOURCE_INTENT_REQUEST_CODE:
switch (resultCode) {
case Activity.RESULT_OK:
installApkProgramatically();
break;
case Activity.RESULT_CANCELED:
//unknown resouce installation cancelled
break;
}
break;
}
}
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