我创建了一个应用程序，它应该在运行时请求权限。但它不要求任何权限。我可以从设置手动授予权限，但它自己没有请求权限。此外，当点击按钮时，它应该要求权限，并且在授予权限后，它应该显示图像。即使我从设置手动授予权限后，也没有显示图像。我该如何解决这个问题？有人可以帮忙吗？
Bacon1 是包含点击按钮的活动，点击它应该切换到 ActivityHome
Bacon1.java ：
public class Bacon1 extends Activity {
private static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 1;
private static int RESULT_LOAD_IMAGE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bacon1);
}
private void buttonClicked(View view) {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.READ_EXTERNAL_STORAGE) + ContextCompat
.checkSelfPermission(this,
Manifest.permission.INTERNET)
!= PackageManager.PERMISSION_GRANTED) {
Snackbar.make(view, "Permission not Granted, Requesting permission.", Snackbar.LENGTH_LONG).show();
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_EXTERNAL_STORAGE)) {
Snackbar.make(view, "We need permission to internal storage for displaying songs", Snackbar.LENGTH_LONG).show();
} else {
Snackbar.make(view, "Allow myapp3 to access this device's internal storage", Snackbar.LENGTH_LONG).show();
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
}
public void onClick2(View view) {
buttonClicked(view);
Intent viewIntent2 = new Intent(this, ActivityHome.class);
startActivity(viewIntent2);
}
public void onClick5(View view) {
Intent viewIntent1 = new Intent(Intent.ACTION_VIEW);
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.getExternalStorageDirectory() + "/myapp") + "/" + "downloadedfile.zip");
viewIntent1.setDataAndType(Uri.fromFile(file), "application/zip");
startActivity(Intent.createChooser(viewIntent1, null));
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 1: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(Bacon1.this, "WRITE_CONTACTS granted", Toast.LENGTH_SHORT)
.show();
} else {
Toast.makeText(Bacon1.this, "WRITE_CONTACTS Denied", Toast.LENGTH_SHORT)
.show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
}
ActivityHome.java ：
public class ActivityHome extends AppCompatActivity implements SlideMenuAdapterInterface{
private Context mContext;
private Toolbar toolbar;
private DrawerLayout Drawer;
private ActionBarDrawerToggle mDrawerToggle;
private FragmentManager fragmentManager = null;
private FragmentTransaction fragmentTransaction = null;
private Fragment currentFragment=null;
private ListView slidingList;
private SlideMenuAdapter mSlideMenuAdapter;
private int currentPosition=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
mContext=getApplicationContext();
initializeActionBar();
initialCalling();
}
@Override
public void onBackPressed() {
if(Drawer.isDrawerOpen(Gravity.LEFT)){
Drawer.closeDrawer(Gravity.LEFT);
}else{
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void slideRowClickEvent(int postion) {
if (currentPosition== postion) {
closeDrware();
return;
}
currentPosition= postion;
getFragment(postion);
attachedFragment();
}
private void initializeActionBar() {
toolbar = (Toolbar) findViewById(R.id.tool_bar);
toolbar.setTitle("");
setSupportActionBar(toolbar);
slidingList=(ListView)findViewById(R.id.sliding_listView);
mSlideMenuAdapter=new SlideMenuAdapter(mContext, getSlideList());
mSlideMenuAdapter.setSlidemenuadapterinterface(this);
slidingList.setAdapter(mSlideMenuAdapter);
Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);
mDrawerToggle = new ActionBarDrawerToggle(this, Drawer, toolbar,
R.string.openDrawer, R.string.closeDrawer) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
Drawer.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}
private void closeDrware(){
if(Drawer.isDrawerOpen(Gravity.LEFT)){
Drawer.closeDrawer(Gravity.LEFT);
}
}
private void initialCalling(){
fragmentManager = getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
getFragment(0);
attachedFragment();
}
private void attachedFragment(){
try {
if (currentFragment != null) {
if (fragmentTransaction.isEmpty()) {
fragmentTransaction.add(R.id.fragment_container, currentFragment,"" + currentFragment.toString());
fragmentTransaction.commit();
toolbar.setTitle(title[currentPosition]);
}else {
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, currentFragment,"" + currentFragment.toString());
fragmentTransaction.commit();
toolbar.setTitle(title[currentPosition]);
}
}
closeDrware();
} catch (Exception e) {
e.printStackTrace();
}
}
private void getFragment(int postion){
switch (postion) {
case 0:
currentFragment = new GalleryFragment();
break;
case 1:
currentFragment = new CameraFragment();
break;
case 2:
currentFragment = new VideoFragment();
break;
default:
break;
}
}
/**
* Slide Menu List Array.
*/
private String[] title={"All Images","Camera","Video"};
private int[] titleLogo={R.drawable.selector_allpic,R.drawable.selector_camera,R.drawable.selector_video};
private ArrayList<SlideData> getSlideList(){
ArrayList<SlideData> arrayList=new ArrayList<SlideData>();
for (int i = 0; i < title.length; i++) {
SlideData mSlideData=new SlideData();
mSlideData.setIcon(titleLogo[i]);
mSlideData.setName(title[i]);
mSlideData.setState((i==0)?1:0);
arrayList.add(mSlideData);
}
return arrayList;
}
}
AndroidManifest：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dell_1.copycat2">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.INTERNET" />
<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">
<activity
android:name=".apples"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Bacon1"
android:label="activity_bacon1" />
<activity
android:name=".activity.ActivityHome"
android:label="activity_home" />
<activity
android:name=".activity.AlbumActivity"
android:label="@string/app_name">
</activity>
<activity
android:name=".activity.PhotoPreviewActivity"
android:label="@string/app_name">
</activity>
</application>
</manifest>
build.gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.example.dell_1.copycat2"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:design:26.+'
compile files('libs/universal-image-loader-1.9.2-SNAPSHOT-with-sources.jar')
testCompile 'junit:junit:4.12'
}
答案 0 :(得分：0)
首先INTERNET不是dangerous权限，因此没有运行时权限的角色。其次，您不能将两个checkSelfPermission()结果一起添加并期望有用的东西。
删除+ ContextCompat
.checkSelfPermission(this,
Manifest.permission.INTERNET)
!= PackageManager.PERMISSION_GRANTED
看看是否能解决你的问题。