在Android6.0后有些权限就需要进行询问，虽然可以将targetSdkVersion设置成小于等于23，但是这样可能有些东西无法使用，所以要进行权限的管理。
实现逻辑：打开页面就询问权限，如果没有权限就出现系统提示框，如果拒绝则弹出自定义警告框，左边是设置跳到系统的权限的界面，右边是结束当前的页面。
AndroidManifest.xml
<!--危险权限-->
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <!--一般权限-->
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
MainActivity.java
package com.kkrs.permission; import android.Manifest;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle; public class MainActivity extends AppCompatActivity { private static final int REQUEST_CODE = 0; // 请求码 // 所需的全部权限
static final String[] PERMISSIONS = new String[]{
Manifest.permission.RECORD_AUDIO,
Manifest.permission.MODIFY_AUDIO_SETTINGS,
Manifest.permission.WRITE_EXTERNAL_STORAGE
}; private PermissionsChecker mPermissionsChecker; // 权限检测器 @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); mPermissionsChecker = new PermissionsChecker(this);
} @Override protected void onResume() {
super.onResume(); // 缺少权限时, 进入权限配置页面
if (mPermissionsChecker.lacksPermissions(PERMISSIONS)) {
startPermissionsActivity();
}
} private void startPermissionsActivity() {
PermissionsActivity.startActivityForResult(this, REQUEST_CODE, PERMISSIONS);
} @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// 拒绝时, 关闭页面, 缺少主要权限, 无法运行
if (requestCode == REQUEST_CODE && resultCode == PermissionsActivity.PERMISSIONS_DENIED) {
finish();
}
}
}
PermissionsChecker.java
package com.kkrs.permission; import android.content.Context;
import android.content.pm.PackageManager;
import android.support.v4.content.ContextCompat; /**
* Created by zd on 2018/12/10.
*/ public class PermissionsChecker {
private final Context mContext; public PermissionsChecker(Context context) {
mContext = context.getApplicationContext();
} // 判断权限集合
public boolean lacksPermissions(String... permissions) {
for (String permission : permissions) {
if (lacksPermission(permission)) {
return true;
}
} return false;
} // 判断是否缺少权限
private boolean lacksPermission(String permission) {
return ContextCompat.checkSelfPermission(mContext, permission) ==
PackageManager.PERMISSION_DENIED;
}
}
PermissionsActivity.java
package com.kkrs.permission; import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity; /**
* Created by zd on 2018/12/10.
*/ public class PermissionsActivity extends AppCompatActivity {
public static final int PERMISSIONS_GRANTED = 0; // 权限授权
public static final int PERMISSIONS_DENIED = 1; // 权限拒绝 private static final int PERMISSION_REQUEST_CODE = 0; // 系统权限管理页面的参数
private static final String EXTRA_PERMISSIONS =
"com.kkrs.permission.permission.extra_permission"; // 权限参数
private static final String PACKAGE_URL_SCHEME = "package:"; // 方案 private PermissionsChecker mChecker; // 权限检测器
private boolean isRequireCheck; // 是否需要系统权限检测 // 启动当前权限页面的公开接口
public static void startActivityForResult(Activity activity, int requestCode, String... permissions) {
Intent intent = new Intent(activity, PermissionsActivity.class);
intent.putExtra(EXTRA_PERMISSIONS, permissions);
ActivityCompat.startActivityForResult(activity, intent, requestCode, null);
} @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getIntent() == null || !getIntent().hasExtra(EXTRA_PERMISSIONS)) {
throw new RuntimeException("PermissionsActivity需要使用静态startActivityForResult方法启动!");
}
setContentView(R.layout.activity_permissions);
mChecker = new PermissionsChecker(this);
isRequireCheck = true;
} @Override protected void onResume() {
super.onResume();
if (isRequireCheck) {
String[] permissions = getPermissions();
if (mChecker.lacksPermissions(permissions)) {
requestPermissions(permissions); // 请求权限
} else {
allPermissionsGranted(); // 全部权限都已获取
}
} else {
isRequireCheck = true;
}
} // 返回传递的权限参数
private String[] getPermissions() {
return getIntent().getStringArrayExtra(EXTRA_PERMISSIONS);
} // 请求权限兼容低版本
private void requestPermissions(String... permissions) {
ActivityCompat.requestPermissions(this, permissions, PERMISSION_REQUEST_CODE);
} // 全部权限均已获取
private void allPermissionsGranted() {
setResult(PERMISSIONS_GRANTED);
finish();
} /**
* 用户权限处理,
* 如果全部获取, 则直接过.
* 如果权限缺失, 则提示Dialog.
*
* @param requestCode 请求码
* @param permissions 权限
* @param grantResults 结果
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == PERMISSION_REQUEST_CODE && hasAllPermissionsGranted(grantResults)) {
isRequireCheck = true;
allPermissionsGranted();
} else {
isRequireCheck = false;
showMissingPermissionDialog();
}
} // 含有全部的权限
private boolean hasAllPermissionsGranted(@NonNull int[] grantResults) {
for (int grantResult : grantResults) {
if (grantResult == PackageManager.PERMISSION_DENIED) {
return false;
}
}
return true;
} // 显示缺失权限提示
private void showMissingPermissionDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(PermissionsActivity.this);
builder.setTitle("权限标题");
builder.setMessage("需要权限的内容"); // 拒绝, 退出应用
builder.setNegativeButton("退出", new DialogInterface.OnClickListener() {
@Override public void onClick(DialogInterface dialog, int which) {
setResult(PERMISSIONS_DENIED);
finish();
}
}); builder.setPositiveButton("设置", new DialogInterface.OnClickListener() {
@Override public void onClick(DialogInterface dialog, int which) {
startAppSettings();
}
}); builder.show();
} // 启动应用的设置
private void startAppSettings() {
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.setData(Uri.parse(PACKAGE_URL_SCHEME + getPackageName()));
startActivity(intent);
}
}
效果