Android 動態申請 許可權 permission
阿新 • • 發佈:2018-11-20
文章目錄
1、單個許可權動態申請
以SD 卡讀寫 許可權 為例
1)檔案結構
2) 在 AndroidManifest.xml 新增許可權
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
3)在程式碼裡進行許可權檢查 和 申請
package com.example.lum.myapplicationpermission; import android.Manifest; import android.content.pm.PackageManager; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; public class MainActivity extends AppCompatActivity { private String TAG = "MainActivity: "; private final int REQUESTCODE = 100; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); checkPermission(); } //sd 卡許可權檢查 private void checkPermission() { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { Log.i(TAG,"沒有許可權進行申請"); ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},REQUESTCODE); } else { Log.i(TAG,"已經有許可權"); } } //sd 卡許可權申請 @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { if(requestCode == REQUESTCODE){ if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { Log.i(TAG,"使用者同意權限申請"); } else { Log.i(TAG,"使用者不同意許可權申請"); } } } }
2、多個許可權 動態申請
1) 在 AndroidManifest.xml 新增許可權
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.INTERNET"/>
2)、MainActivity 檔案
package com.example.lum.myapplicationpermission;
import android.Manifest;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.provider.Settings;
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.os.Bundle;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private String TAG = "MainActivity: ";
private List<String> unPermissionList = new ArrayList<String>(); //申請未得到授權的許可權列表
private final int RequestCode = 100;//許可權請求碼
private AlertDialog mPermissionDialog;
private String mPackName ; //獲取 a'p'k 包名
private String[] permissionList = new String[]{ //申請的許可權列表
Manifest.permission.CAMERA,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.INTERNET
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
checkPermission();
mPackName = getPackageName();
}
//許可權判斷和申請
public void checkPermission() {
unPermissionList.clear();//清空申請的沒有通過的許可權
//逐個判斷是否還有未通過的許可權
for (int i = 0; i < permissionList.length; i++) {
if (ContextCompat.checkSelfPermission(this, permissionList[i]) !=
PackageManager.PERMISSION_GRANTED) {
unPermissionList.add(permissionList[i]);//新增還未授予的許可權到unPermissionList中
}
}
//有許可權沒有通過,需要申請
if (unPermissionList.size() > 0) {
ActivityCompat.requestPermissions( this,permissionList, 100);
Log.i(TAG, "check 有許可權未通過");
} else {
//許可權已經都通過了,可以將程式繼續打開了
Log.i(TAG, "check 許可權都已經申請通過");
}
}
/**
* 5.請求許可權後回撥的方法
*
* @param requestCode 是我們自己定義的許可權請求碼
* @param permissions 是我們請求的許可權名稱陣列
* @param grantResults 是我們在彈出頁面後是否允許許可權的標識陣列,陣列的長度對應的是許可權
* 名稱陣列的長度,陣列的資料0表示允許許可權,-1表示我們點選了禁止許可權
*/
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
Log.i(TAG,"申請結果反饋");
boolean hasPermissionDismiss = false;
if (100 == requestCode) {
for (int i = 0; i < grantResults.length; i++) {
if (grantResults[i] == -1) {
hasPermissionDismiss = true; //有許可權沒有通過
Log.i(TAG,"有許可權沒有被通過");
break;
}
}
}
if (hasPermissionDismiss) {//如果有沒有被允許的許可權
showPermissionDialog();
} else {
//許可權已經都通過了,可以將程式繼續打開了
Log.i(TAG, "onRequestPermissionsResult 許可權都已經申請通過");
}
}
/**
* 不再提示許可權時的展示對話方塊
*/
private void showPermissionDialog() {
Log.i(TAG,"mPackName: " + mPackName);
if (mPermissionDialog == null) {
mPermissionDialog = new AlertDialog.Builder(this)
.setMessage("已禁用許可權,請手動授予")
.setPositiveButton("設定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
cancelPermissionDialog();
Uri packageURI = Uri.parse("package:" + mPackName); //去設定裡面設定
Intent intent = new Intent(Settings.
ACTION_APPLICATION_DETAILS_SETTINGS, packageURI);
startActivity(intent);
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//關閉頁面或者做其他操作
cancelPermissionDialog();
}
})
.create();
}
mPermissionDialog.show();
}
private void cancelPermissionDialog() {
mPermissionDialog.cancel();
}
}
想嘗試定義一個單獨的 permissionUtils 類來實現 許可權申請,沒有成功。。。。。
許可權 回撥函式 不執行
文章參考:
每日一記—Android動態申請多個許可權
https://blog.csdn.net/weixin_39657438/article/details/82588576
Android PermissionUtils:執行時許可權工具類及申請許可權的正確姿勢
https://blog.csdn.net/ifadai/article/details/73333940