我在飞溅屏幕上获得棉花糖许可时撞墙。我的动机是在加载启动画面前它应该提示用户许可。但是，在我的情况下，它会提示但只有2秒然后隐藏
这是代码
public class SplashScreen extends AppCompatActivity {
AlertDialog dailog;
AlertDialog.Builder builder;
ProgressBar progressBar;
int progressStatus = 0;
TextView textView1, textView2;
Handler handler = new Handler();
private SessionManager session;
ConnectivityManager cm;
boolean isConnected;
private int STORAGE_PERMISSION_CODE = 23;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash_screen);
builder = new AlertDialog.Builder(SplashScreen.this);
session = new SessionManager(getApplicationContext());
if (getSupportActionBar() != null) {
getSupportActionBar().hide();
}
cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
isConnected = activeNetwork != null &&
activeNetwork.isConnectedOrConnecting();
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
setupWindowAnimations();
}
if(isReadStorageAllowed()){
//If permission is already having then showing the toast
Toast.makeText(SplashScreen.this,"You already have the permission",Toast.LENGTH_LONG).show();
//Existing the method with return
return;
}
//If the app has not the permission then asking for the permission
requestStoragePermission();
}
@Override
protected void onStart() {
super.onStart();
if(isReadStorageAllowed()){
//If permission is already having then showing the toast
Toast.makeText(SplashScreen.this,"You already have the permission",Toast.LENGTH_LONG).show();
//Existing the method with return
return;
}else //If the app has not the permission then asking for the permission
requestStoragePermission();
}
//First permission before activity creation then it would undergo onpause then onResume check net
@Override
protected void onResume() {
super.onResume();
netValidator();
}
public void netValidator(){
if(isConnected) {
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
forNext();
}
}, 2000);
}else{
showDialog();
}
}
private boolean isReadStorageAllowed() {
//Getting the permission status
int result = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);
//If permission is granted returning true
if (result == PackageManager.PERMISSION_GRANTED)
return true;
//If permission is not granted returning false
return false;
}
private void requestStoragePermission(){
if(ActivityCompat.shouldShowRequestPermissionRationale(this,Manifest.permission.READ_PHONE_STATE)){
//If the user has denied the permission previously your code will come to this block
//Here you can explain why you need this permission
//Explain here why you need this permission
//Toast.makeText(SplashScreen.this, "For Marsmallow,we do need this permission", Toast.LENGTH_SHORT).show();
}
//And finally ask for the permission
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.READ_PHONE_STATE},STORAGE_PERMISSION_CODE);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
//Checking the request code of our request
if(requestCode == STORAGE_PERMISSION_CODE){
//If permission is granted
if(grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
//Displaying a toast
// Toast.makeText(this,"Permission granted now you can read the storage",Toast.LENGTH_LONG).show();
}else{
// finish();
//Displaying another toast if permission is not granted
//Toast.makeText(this,"You have just denied the permission",Toast.LENGTH_LONG).show();
}
}
}
private void forNext(){
if ((TextUtils.isEmpty(session.getUserName()))) {
startActivity(new Intent(SplashScreen.this,splash_Login.class));
finish();
} else {
Intent i = new Intent(SplashScreen.this, MainActivity.class);
startActivity(i);
finish();
}
}
private void showDialog(){
builder.setTitle("Warning !");
builder.setCancelable(false);
builder.setMessage("This application requires Internet connection.Go to Setting and Activate Internet");
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(new Intent(Settings.ACTION_SETTINGS));
}
});
builder.setNegativeButton("EXIT", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
dailog = builder.create();
dailog.show();
}
}
我希望在加载启动画面之前进行提示显示。您能帮助我在哪里进行更改吗？
答案 0 :(得分：3)
从onResume中删除您的方法 netValidator（）; 并在此处调用它：
if(grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
netValidator();
//Displaying a toast
// Toast.makeText(this,"Permission granted now you can read the storage",Toast.LENGTH_LONG).show();
}
也可以在此处调用此方法：
if(isReadStorageAllowed()){
netValidator();
}
在你的onCreate（）中你喜欢这样：
if(isReadStorageAllowed()){
//If permission is already having then showing the toast
Toast.makeText(SplashScreen.this,"You already have the
permission",Toast.LENGTH_LONG).show();
netValidator();
//Existing the method with return
//return; Remove this
}else{
//If the app has not the permission then asking for the permission
requestStoragePermission();
}