这一节了解一下普通应用安装app的方式,主要是唤起系统来安装,直接上代码:
申请权限
XML
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="com.example.permission.SOME_PERMISSION" />
<uses-permission android:name="android.permission.INSTALL_PACKAGES"
tools:ignore="ProtectedPermissions" />
<uses-permission
android:name="android.permission.WRITE_SETTINGS"
tools:ignore="ProtectedPermissions" />
<uses-permission
android:name="android.permission.ACCESS_SUPERUSER" />
<uses-permission
android:name=".PERMISSION" />
<uses-permission
android:name="android.permission.GET_PACKAGE_SIZE" />
<uses-permission
android:name="android.permission.MANAGE_DOCUMENTS"
tools:ignore="ProtectedPermissions" />
<application>
...
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="com.dc.cplustest.fileProvider"
android:exported="false"
android:permission="com.example.permission.SOME_PERMISSION"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/filepaths" />
</provider>
...
</application>
res/xml/filepaths.xml
Activity中:
java
private static final String[] PERMISSIONS = new String[]{
android.Manifest.permission.ACCESS_COARSE_LOCATION,
android.Manifest.permission.READ_EXTERNAL_STORAGE,
android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.MANAGE_EXTERNAL_STORAGE,
android.Manifest.permission.INSTALL_PACKAGES,
Manifest.permission.WRITE_SETTINGS,
Manifest.permission.REQUEST_INSTALL_PACKAGES
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
checkInstallPermission();
initView();
}
public String apk = Environment.getExternalStorageDirectory() + File.separator + "Test" + File.separator + "APK" + File.separator+"fenshen.apk";
private void initView() {
if (!checkPermissions(PERMISSIONS)) {
ActivityCompat.requestPermissions(this, PERMISSIONS, 1000);
}
findViewById(R.id.btn_test_so).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
install();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
});
}
public void checkInstallPermission() {
boolean haveInstallPermission;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
haveInstallPermission = getPackageManager().canRequestPackageInstalls();
Log.d("Test","Test haveInstallPermission:"+haveInstallPermission);
if (!haveInstallPermission) {//没有权限让调到设置页面进行开启权限;
Uri packageURI = Uri.parse("package:" + getPackageName());
Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, packageURI);
startActivityForResult(intent, 10086);
}
}
}
public void install() {
File apkFile = new File(apk);
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setAction(Intent.ACTION_VIEW);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
//注意第二个参数,要保持和manifest中android:authorities的值相同
Uri uri = FileProvider.getUriForFile(SecondActivity.this,
SecondActivity.this.getPackageName() + ".fileProvider", apkFile);
intent.setDataAndType(uri, "application/vnd.android.package-archive");
intent.setData(uri);
startActivity(intent);
}
private boolean checkPermissions(String[] neededPermissions) {
if (neededPermissions == null || neededPermissions.length == 0) {
return true;
}
boolean allGranted = true;
for (String neededPermission : neededPermissions) {
Log.d("Test","权限"+neededPermission+"是否已给: "+(ContextCompat.checkSelfPermission(this, neededPermission) == PackageManager.PERMISSION_GRANTED));
allGranted &= ContextCompat.checkSelfPermission(this, neededPermission) == PackageManager.PERMISSION_GRANTED;
}
return allGranted;
}