Android 6.0+ 动态获取权限
这里有一个现成的库，可以直接拿来用。方便简单
1.向app下的gradle添加依赖：
dependencies{
// android 6.0+ 动态获取权限
compile'com.master.android:permissionhelper:1.3'
}
2.在你的app启动的第一个activity中进行初始化
private static final StringTAG ="Sessin -->>> 6.0+权限申请";
private PermissionHelperpermissionHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// android 6.0+ 动态获取权限
permissionHelper =new PermissionHelper(this,new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE},100);
permissionHelper.request(this);
}
3.实现相关方法
@Override
public void onPermissionGranted() {
//全都授权
Log.i(TAG,"已授权...");
}
@Override
public void onIndividualPermissionGranted(String[] grantedPermission) {
//某个授权
Log.i(TAG,"onIndividualPermissionGranted() called with: grantedPermission = [" + TextUtils.join(",", grantedPermission) +"]");
}
@Override
public void onPermissionDenied() {
//某个拒绝
Log.w(TAG,"onPermissionDenied...");
}
@Override
public void onPermissionDeniedBySystem() {
//用户选择了"不再询问"后，点击"拒绝按钮"，执行此方法
Log.w(TAG,"onPermissionDeniedBySystem...");
}
4.如果app有一些必须申请的权限，不申请会影响app正常使用的。比如：定位、相机、读取存储器等
@Override
public void onRequestPermissionsResult(int requestCode,@NonNull String[] permissions,@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (permissionHelper !=null) {
permissionHelper.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
if (!PermissionUtil.verifyPermissions(grantResults)) {
openPermissionSetting();
}
}
这是授权结果的回调。如果用户拒绝了权限执行openPermissionSetting();方法，让用户去手机设置中对权限进行手动添加，如果取消，app则会退出。
以上就是权限动态获取的全过程。
在贴一个PermissionUtil工具类和openPermissionSetting();方法的代码
PermissionUtil：
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
/**
* Utility class that wraps access to the runtime permissions API in M and provides basic helper
* methods.
*/
public abstract class PermissionUtil {
/**
* Check that all given permissions have been granted by verifying that each entry in the
* given array is of the value {@link PackageManager#PERMISSION_GRANTED}.
*
* @see Activity#onRequestPermissionsResult(int, String[], int[])
*/
public static boolean verifyPermissions(int[] grantResults) {
// At least one result must be checked.
if(grantResults.length <1){
return false;
}
// Verify that each required permission has been granted, otherwise return false.
for (int result : grantResults) {
if (result != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
return true;
}
public static void showPermisionSetting(Context context){
Intent localIntent =new Intent();
localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >=9) {
localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
localIntent.setData(Uri.fromParts("package", context.getPackageName(),null));
}else if (Build.VERSION.SDK_INT <=8) {
localIntent.setAction(Intent.ACTION_VIEW);
localIntent.setClassName("com.android.settings","com.android.settings.InstalledAppDetails");
localIntent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
}
context.startActivity(localIntent);
}
}
openPermissionSetting();
/**
* 打开 APP 的详情设置
*/
private void openPermissionSetting() {
AlertDialog.Builder builder =new AlertDialog.Builder(this,
R.style.Theme_AppCompat_Light_Dialog);
builder.setMessage(R.string.permission_lead_tips);
builder
.setPositiveButton(R.string.go_hand_permission,new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,int which) {
Intent intent =new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getPackageName()));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(intent);
}
});
builder.setNegativeButton(getString(R.string.cancel),new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,int which) {
finish();
Log.w(TAG,"用户拒绝程序必要权限，因此退出程序！");
}
});
builder.show();
}
希望可以帮助到需要用的人
