6.0动态权限

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package com.aqinga.my;import android.Manifest;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.PackageManager;import android.net.Uri;import android.os.Bundle;import android.provider.MediaStore;import android.provider.Settings;import android.support.annotation.NonNull;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;public class MainActivity extends AppCompatActivity {    public static final String quanxian = Manifest.permission.CAMERA;    public static final int CAMERA_PERMISSION_REQUEST_CODE = 100;    private static final int a = 10;    public static String TAG = "TAG";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    public void XiangJi(View view) {        if (ContextCompat.checkSelfPermission(this,quanxian)== PackageManager.PERMISSION_GRANTED){            QiDong();            Log.e(TAG,"检查权限======用户已经拥有这个权限了");        }else {            ActivityCompat.requestPermissions(this,new String[]{quanxian},CAMERA_PERMISSION_REQUEST_CODE);            Log.e(TAG,"检查权限======用户拒绝了这个权限");        }    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        switch (requestCode){            case a:                if (ContextCompat.checkSelfPermission(this,quanxian)==PackageManager.PERMISSION_GRANTED){                    QiDong();                    Log.e(TAG, "===========设置页面返回之后-再次检查权限---用户已经拥有相机这个权限了");                }else {                    Log.e(TAG, "===========设置页面返回之后-再次检查权限---用户没有开启这个权限，在这不用再去请求权限了");                }                break;        }    }    private void QiDong() {        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        startActivityForResult(intent,0);    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        switch (requestCode){            case CAMERA_PERMISSION_REQUEST_CODE:                if (permissions[0].equals(quanxian)){                    if (grantResults[0]==PackageManager.PERMISSION_GRANTED){                        Log.e(TAG, "===========权限回调---用户同意了");                        QiDong();                    }else {                        Log.e(TAG, "===========权限回调---用户拒绝了");                        if (ActivityCompat.shouldShowRequestPermissionRationale(this,quanxian)){                            Shezhi();                        }else {                            showTipExplainPermission();                        }                    }                }                break;        }    }    private void Shezhi() {        new     AlertDialog.Builder(this)                .setTitle("需要打开相机权限")                .setMessage("再设置权限中打开相机权限")                .setPositiveButton("立即开启", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        GotoShezhi();                    }                })                .setNegativeButton("取消",null)                .show();    }    private void GotoShezhi() {        Intent intent = new Intent();        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);        Uri uri = Uri.fromParts("package", getPackageName(), null);        intent.setData(uri);        startActivityForResult(intent,a);    }    private void showTipExplainPermission() {        new AlertDialog.Builder(this)                .setTitle("说明")                .setMessage("需要开启相机权限去拍照")                .setPositiveButton("确定", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Shezhi();                    }                })                .setNegativeButton("取消",null)                .show();    }}
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