android代码判断权限,安卓权限检测代码
Android 23 以后加入了新的權限檢查機制，對一些危險權限，進行了新的授權管理，以讓用戶明確app都是用了哪些權限，這也讓我們的開發多做了一些工作。
public class BaseActivity extends Activity {
protected static final int REQ_CODE_REQUEST_OPEN_PERMISSION = 0x9001;
// 危險權限的列表
private static Map sPermissionMap;
static {
sPermissionMap = new LinkedHashMap<>();
sPermissionMap.put(Manifest.permission.READ_PHONE_STATE, "讀取手機信息");
sPermissionMap.put(Manifest.permission.READ_CONTACTS, "讀取聯系人");
sPermissionMap.put(Manifest.permission.WRITE_EXTERNAL_STORAGE, "讀寫外部存儲空間");
sPermissionMap.put(Manifest.permission.CAMERA, "相機");
sPermissionMap.put(Manifest.permission.RECORD_AUDIO, "錄音");
sPermissionMap.put(Manifest.permission.ACCESS_FINE_LOCATION, "訪問位置");
}
// 檢測權限
protected void checkPermission() {
Observable.fromIterable(sPermissionMap.keySet()).filter(new Predicate() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.checkSelfPermission(BaseActivity.this, permission) != PackageManager.PERMISSION_GRANTED;
}
}).toList().subscribe(new Consumer>() {
@Override
public void accept(List permissions) throws Exception {
requestPermissions(permissions.toArray(new String[0]));
}
});
}
// 判斷是否需要顯示為什么要申請權限
private void shouldShowRequestPermissionRationale(final List permissions) {
Observable.fromIterable(permissions).filter(new Predicate() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.shouldShowRequestPermissionRationale(BaseActivity.this, permission);
}
}).toList().subscribe(new Consumer>() {
@Override
public void accept(final List showRequestPermissions) throws Exception {
if (showRequestPermissions.size() > 0) {
getPermissionRationale(showRequestPermissions).subscribe(new Consumer() {
@Override
public void accept(String permissionRationale) throws Exception {
showRequestPermissionRationaleDialog(permissions, permissionRationale);
}
});
} else {
/**
* // 下面的代碼可以強制用戶打開所有的權限。
* getPermissionRationale(permissions).subscribe(new Consumer() {
* @Override
* public void accept(String permissionRationale) throws Exception {
* showPermissionRefusedDialog(permissionRationale);
* }
* });
*/
onPermissionGranted();
}
}
});
}
// 獲取權限的提示
private Observable getPermissionRationale(List permissions) {
return Observable.fromIterable(permissions).toList().map(new Function, String>() {
@Override
public String apply(List 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();
}
});
}
// 顯示為什么要申請權限的對話框
private void showRequestPermissionRationaleDialog(final List permissions, String permissionRationale) {
// 顯示權限請求對話框
DialogUtils.showAlert(BaseActivity.this, "申請權限", "應用需要申請" + permissionRationale + "的權限", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(permissions.toArray(new String[0]));
}
});
}
// 申請權限
private void requestPermissions(String[] permissions) {
if (permissions == null || permissions.length == 0) {
onPermissionGranted();
return;
}
ActivityCompat.requestPermissions(BaseActivity.this, permissions, Config.REQUEST_ASK_PERMISSIONS);
}
// 權限授權后
protected void onPermissionGranted() {
}
// 提供給子類檢查權限，如果沒有權限，提示用戶打開相應的權限。
@Override
public void checkPermissions(String... permissions) {
Observable.fromArray(permissions).filter(new Predicate() {
@Override
public boolean test(String permission) throws Exception {
return ActivityCompat.checkSelfPermission(BaseActivity.this, permission) != PackageManager.PERMISSION_GRANTED;
}
}).toList().subscribe(new Consumer>() {
@Override
public void accept(List notGrantPermissions) throws Exception {
getPermissionRationale(notGrantPermissions).subscribe(new Consumer() {
@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 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);
}
}
}
// 顯示權限拒絕對話框
protected void showPermissionRefusedDialog(String permissionRationale) {
DialogUtils.showConfirm(this, "申請權限", "應用需要申請" + permissionRationale + "的權限，但已被拒絕，請手動設置。", 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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