Android 23 以后加入了新的权限检查机制，对一些危险权限，进行了新的授权管理，以让用户明确app都是用了哪些权限，这也让我们的开发多做了一些工作。
public class BaseActivity extends Activity {
protected static final int REQ_CODE_REQUEST_OPEN_PERMISSION = 0x9001;
// 危险权限的列表
private static Map<String, String> sPermissionMap;
static {
sPermissionMap = new LinkedHashMap<>();
sPermissionMap.put(Manifest.permission.READ_PHONE_STATE, "读取手机信息");
sPermissionMap.put(Manifest.permission.READ_CONTACTS, "读取联系人");
sPermissionMap.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, "读写外部存储空间");
sPermissionMap.put(Manifest.permission.CAMERA, "相机");
sPermissionMap.put(Manifest.permission.RECORD_AUDIO, "录音");
sPermissionMap.put(Manifest.permission.ACCESS_FINE_LOCATION, "访问位置");
}
// 检测权限
protected void checkPermission() {
Observable.fromIterable(sPermissionMap.keySet()).filter(new Predicate<String>() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.checkSelfPermission(BaseActivity.this, permission) != PackageManager.PERMISSION_GRANTED;
}
}).toList().subscribe(new Consumer<List<String>>() {
@Override
public void accept(List<String> permissions) throws Exception {
requestPermissions(permissions.toArray(new String[0]));
}
});
}
// 判断是否需要显示为什么要申请权限
private void shouldShowRequestPermissionRationale(final List<String> permissions) {
Observable.fromIterable(permissions).filter(new Predicate<String>() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.shouldShowRequestPermissionRationale(BaseActivity.this, permission);
}
}).toList().subscribe(new Consumer<List<String>>() {
@Override
public void accept(final List<String> showRequestPermissions) throws Exception {
if (showRequestPermissions.size() > 0) {
getPermissionRationale(showRequestPermissions).subscribe(new Consumer<String>() {
@Override
public void accept(String permissionRationale) throws Exception {
showRequestPermissionRationaleDialog(permissions, permissionRationale);
}
});
} else {
/**
* // 下面的代码可以强制用户打开所有的权限。
* getPermissionRationale(permissions).subscribe(new Consumer<String>() {
* @Override
* public void accept(String permissionRationale) throws Exception {
* showPermissionRefusedDialog(permissionRationale);
* }
* });
*/
onPermissionGranted();
}
}
});
}
// 获取权限的提示
private Observable<String> getPermissionRationale(List<String> permissions) {
return Observable.fromIterable(permissions).toList().map(new Function<List<String>, String>() {
@Override
public String apply(List<String> permissions) throws Exception {
StringBuilder builder = new StringBuilder();
if (permissions != null && permissions.size() > 0) {
for (int i = 0; i < permissions.size(); i++) {
builder.append(sPermissionMap.get(permissions.get(i)));
if (i != permissions.size() - 1) {
builder.append("，");
}
}
}
return builder.toString();
}
});
}
// 显示为什么要申请权限的对话框
private void showRequestPermissionRationaleDialog(final List<String> permissions, String permissionRationale) {
// 显示权限请求对话框
DialogUtils.showAlert(BaseActivity.this, "申请权限", "应用需要申请" + permissionRationale + "的权限", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(permissions.toArray(new String[0]));
}
});
}
// 申请权限
private void requestPermissions(String[] permissions) {
if (permissions == null || permissions.length == 0) {
onPermissionGranted();
return;
}
ActivityCompat.requestPermissions(BaseActivity.this, permissions, Config.REQUEST_ASK_PERMISSIONS);
}
// 权限授权后
protected void onPermissionGranted() {
}
// 提供给子类检查权限，如果没有权限，提示用户打开相应的权限。
@Override
public void checkPermissions(String... permissions) {
Observable.fromArray(permissions).filter(new Predicate<String>() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.checkSelfPermission(BaseActivity.this, permission) != PackageManager.PERMISSION_GRANTED;
}
}).toList().subscribe(new Consumer<List<String>>() {
@Override
public void accept(List<String> notGrantPermissions) throws Exception {
getPermissionRationale(notGrantPermissions).subscribe(new Consumer<String>() {
@Override
public void accept(String permissionRationale) throws Exception {
if (!TextUtils.isEmpty(permissionRationale)) {
showPermissionRefusedDialog(permissionRationale);
}
}
});
}
});
}
@Override
public void onRequestPermissionsResult(int requestCode, final String[] permissions, int[] grantResults) {
if (requestCode == Config.REQUEST_ASK_PERMISSIONS) {
if (grantResults == null || grantResults.length == 0) return;
List<String> notGrantedPermissions = new ArrayList<>();
for (int i = 0; i < grantResults.length; i++) {
if (grantResults[i] != PackageManager.PERMISSION_GRANTED) {
notGrantedPermissions.add(permissions[i]);
}
}
if (notGrantedPermissions.size() == 0) {
onPermissionGranted();
} else {
shouldShowRequestPermissionRationale(notGrantedPermissions);
}
}
}
// 显示权限拒绝对话框
protected void showPermissionRefusedDialog(String permissionRationale) {
DialogUtils.showConfirm(this, "申请权限", "应用需要申请" + permissionRationale + "的权限，但已被拒绝，请手动设置。", getString(R.string.sure), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
SystemCompat.startPermissionSettingActivityForResult(BaseActivity.this, REQ_CODE_REQUEST_OPEN_PERMISSION);
}
}, getString(R.string.cancel), null);
}
}
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