如题,我的app想早每次resume(在oncreate也不行)的时候检查权限,如果没有权限就询问,但是他并没有询问的那个弹窗这是为啥呢
我尝试过,把CALL_PHONE 换成READ_EXTERNAL_STORAGE,它就可以显示提示允许还是拒绝读写内存的那个权限提示。这是为什么呢?我调试的设备是小米5an
droid7.0的
下面 是关键代码
package com.example.administrator.myapplication;
import android.Manifest;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import java.util.Arrays;
import static android.content.pm.PackageManager.PERMISSION_GRANTED;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= 23) {
if (PERMISSION_GRANTED == ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE)) {
//has permission, do operation directly
Toast.makeText(this,"alreadyge",Toast.LENGTH_SHORT).show();
} else {
//do not have permission
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, 11);
Toast.makeText(this,"2",Toast.LENGTH_SHORT).show();
}
}
}
}
下面是配置文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.administrator.myapplication">
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<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>
下面是build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.administrator.myapplication"
minSdkVersion 17
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
productFlavors {
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
testCompile 'junit:junit:4.12'
}