Question

我正在尝试我的应用程序，但当我在我的手机中安装apk时，首先启动它显示权限快速崩溃，当我重新启动它显示权限，我检查确定，它的确定。

请问如何预防？因为有些用户不会再次重启应用程序！谢谢

这是我的权限:(仅在记录音频，访问文件时出现问题）

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />

有关项目的信息：

minSdkVersion 15
targetSdkVersion 26
compileSdkVersion 26

非常感谢

错误日志中的错误：

11-21 17:46:17.298 24237-24647/com.geniusly.myapp E/Message_Register: DONE
11-21 17:46:17.476 24237-24237/com.geniusly.myapp E/AndroidRuntime: FATAL EXCEPTION: main
                 Process: com.geniusly.myapp, PID: 24237
                 java.lang.RuntimeException: Failure delivering result ResultInfo{who=@android:requestPermissions:, request=200, result=0, data=null} to activity {com.geniusly.myapp/tin.subtil.HomeActivityNew}: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
                     at android.app.ActivityThread.deliverResults(ActivityThread.java:4481)
                     at android.app.ActivityThread.handleSendResult(ActivityThread.java:4524)
                     at android.app.ActivityThread.-wrap22(ActivityThread.java)
                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1691)
                     at android.os.Handler.dispatchMessage(Handler.java:102)
                     at android.os.Looper.loop(Looper.java:154)
                     at android.app.ActivityThread.main(ActivityThread.java:6692)
                     at java.lang.reflect.Method.invoke(Native Method)
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
                  Caused by: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
                     at tin.subtil.HomeActivityNew.onRequestPermissionsResult(HomeActivityNew.java:298)
                     at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:7404)
                     at android.app.Activity.dispatchActivityResult(Activity.java:7230)
                     at android.app.ActivityThread.deliverResults(ActivityThread.java:4477)
                     at android.app.ActivityThread.handleSendResult(ActivityThread.java:4524) 
                     at android.app.ActivityThread.-wrap22(ActivityThread.java) 
                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1691) 
                     at android.os.Handler.dispatchMessage(Handler.java:102) 
                     at android.os.Looper.loop(Looper.java:154) 
                     at android.app.ActivityThread.main(ActivityThread.java:6692) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)

编辑：

这是我的代码：

private boolean permissionToRecordAccepted = false;
private boolean permissionToWriteAccepted = false;
private String[] permissions = {"android.permission.RECORD_AUDIO", "android.permission.WRITE_EXTERNAL_STORAGE"};

in（onCreate）

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_new);

    int requestCode = 200;
    if (Build.VERSION.SDK_INT >= 23) {
        requestPermissions(permissions, requestCode);
    }

    init();
    myHandler = new Handler();
    slidingUpPanelLayout.setPanelState(SlidingUpPanelLayout.PanelState.HIDDEN);
    SetupToolbar();
    SetupPager();
    SetupDrawer();
    iv_playpause.setTag("pause");      
    MobileAds.initialize(getApplicationContext(), 
    getResources().getString(R.string.admov_id));
    AdView mAdView = (AdView) findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);
}

这里是RequestPermissions：

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case 200:
        if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
            permissionToRecordAccepted=true;
        }
        if(grantResults.length > 0 && grantResults[1] == PackageManager.PERMISSION_GRANTED){
            permissionToWriteAccepted=true;
        }

        break;
    }
    if (!permissionToRecordAccepted) HomeActivityNew.super.finish();
    if (!permissionToWriteAccepted) HomeActivityNew.super.finish();
}

Answer 1

在所有Android版本上，您的应用需要在其应用清单中声明其所需的正常和危险权限，如声明权限中所述。但是，根据系统版本和应用程序的目标SDK级别，该声明的效果会有所不同：

如果设备运行的是Android 5.1或更低版本，或者您应用的目标SDK为22或更低：如果您在清单中列出了危险权限，则用户必须在安装应用时授予权限;如果他们不授予权限，系统根本不会安装应用程序。如果设备运行的是Android 6.0或更高版本，并且您应用的目标SDK为23或更高：应用必须列出清单中的权限，并且必须在应用运行时请求其所需的每个危险权限。用户可以授予或拒绝每个权限，即使用户拒绝权限请求，应用程序也可以继续以有限的功能运行。注意：从Android 6.0（API级别23）开始，用户可以随时撤消任何应用的权限，即使应用程序的API级别较低也是如此。无论您的应用针对什么API级别，您都应该测试自己的应用，以验证其在错过所需权限时是否正常运行。

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.yourlayout);

    int permission = ContextCompat.checkSelfPermission(this,
            Manifest.permission.RECORD_AUDIO);

    if (permission != PackageManager.PERMISSION_GRANTED) {
        Log.i(TAG, "Permission to record denied");
        makeRequest();
    }
}

protected void makeRequest() {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.RECORD_AUDIO},
            RECORD_REQUEST_CODE);
}



Next, implement the onRequestPermissionsResult() method so that it reads as follows:




@Override
public void onRequestPermissionsResult(int requestCode,
                                   String permissions[], int[] 
 grantResults) {
switch (requestCode) {
    case RECORD_REQUEST_CODE: {

        if (grantResults.length == 0
                || grantResults[0] != 
        PackageManager.PERMISSION_GRANTED) {

            Log.i(TAG, "Permission has been denied by user");
        } else {
            Log.i(TAG, "Permission has been granted by user");
        }
        return;
    }
}
}

Answer 2

RxPermission是将代码排成1行的最佳库。

然后询问运行时权限。

RxPermissions rxPermissions = new RxPermissions(this);
rxPermissions
.request(Manifest.permission.RECORD_AUDIO, Manifest.permission.WRITE_EXTERNAL_STORAGE) // ask single or multiple permission once
.subscribe(granted -> {
    if (granted) {
       // All requested permissions are granted
    } else {
       // At least one permission is denied
    }
});

将此库添加到您的build.gradle

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
    implementation 'com.github.tbruyelle:rxpermissions:0.10.1'
    implementation 'com.jakewharton.rxbinding2:rxbinding:2.1.1'
}

这不容易吗？

在请求权限之前，应用程序在启动时崩溃

2 个答案: