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Code:
package com.example_kaladial82.sharedpref;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.core.content.FileProvider;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.content.SharedPreferences;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
public class MainActivity extends AppCompatActivity
{
String kfz = "";
Button btnKam;
ImageView ivBild1;
Intent bildIntent;
Context context;
//File dir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "Fotoapp");
String name = "Bild_" + System.currentTimeMillis() + ".png";
File dir = null;
File bild = null;
Uri bilduri = null;
int Kameracode = 11;
Bitmap bm1;
private EditText etKFZ1;
int i=0;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
etKFZ1 = (EditText) findViewById(R.id.etKFZ);
btnKam = (Button) findViewById(R.id.btnCam);
ivBild1 = (ImageView) findViewById(R.id.ivBild);
boolean res = true;
dir = checkDir("Fotoapp");
if(dir != null)
{
Toast.makeText(getApplicationContext(), "Verzeichnis: " + dir.toString(), Toast.LENGTH_SHORT).show();
if(!dir.exists())
{
res = dir.mkdirs();
Toast.makeText(getApplicationContext(), "Verzeichnis erstellt: " + res, Toast.LENGTH_SHORT).show();
}
}else{
res = false;
}
if(res)
{
Toast.makeText(getApplicationContext(), "Verzeichnis " + dir.toString(), Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(), "Bild " + bild.toString(), Toast.LENGTH_SHORT).show();
bild = new File(dir, /*name*/"0.png");
bilduri = FileProvider.getUriForFile(MainActivity.this, BuildConfig.APPLICATION_ID + ".provider", bild);
ivBild1.setImageResource(R.drawable.ic_launcher_foreground);
btnKam.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
kfz = etKFZ1.getText().toString();
/*try {
bild.createNewFile();
} catch (IOException e) {
Toast.makeText(getApplicationContext(), "Bild konnte nicht erstellt werden: " + e.getMessage(), Toast.LENGTH_LONG).show();
}*/
bildIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
bildIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
bildIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
bildIntent.putExtra(MediaStore.EXTRA_OUTPUT, bilduri);
startActivityForResult(bildIntent, Kameracode);
} catch (Exception ex) {
ex.printStackTrace();
Toast.makeText(getApplicationContext(), "Kamera unterstützt das nicht..." + ex.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}
);
}
//SharedPreferences mySPR = getSharedPreferences("MySPFILE",0);
//etKFZ1.setText(mySPR.getString("myKey1", "AP-AA 582"));
}
public File checkDir(String verzeichnis)
{
int REQUEST_WRITE_EXTERNAL_STORAGE = 1;
File storageDir = null;
try {
if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
//RUNTIME PERMISSION Android M
if (PackageManager.PERMISSION_GRANTED == ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
storageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), verzeichnis);
} else {
Toast.makeText(getApplicationContext(), "Keine Erlaubnis ein Verzeichnis zu erstellen", Toast.LENGTH_SHORT).show();
}
}
} catch (Exception ex) {
Toast.makeText(getApplicationContext(), "Fehler:" + ex.getMessage(), Toast.LENGTH_LONG).show();
}
return storageDir;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data)
{
if(resultCode == RESULT_OK)
{
if(requestCode == Kameracode)
{
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
{
if (!ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE))
{
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1234);
}
}
else
{
dateierstellen();
}
}
}
else
{
Toast.makeText(getApplicationContext(), "resultCode: "+resultCode ,Toast.LENGTH_SHORT).show();
}
super.onActivityResult(requestCode, resultCode, data);
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults)
{
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 1234)
{
if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
{
Log.i("resultcode", "dateierstellen " + requestCode);
dateierstellen();
}
else
{
Toast.makeText(getApplicationContext(), "Permission Denied", Toast.LENGTH_SHORT).show();
}
}
}
private void dateierstellen()
{
Toast.makeText(getApplicationContext(), "Bild gespeichert unter: " + bild.getAbsolutePath() ,Toast.LENGTH_LONG).show();
try {
Toast.makeText(getApplicationContext(), "verzeichnis:" + dir.toString() ,Toast.LENGTH_SHORT).show();
if (dir.listFiles() != null) {
if (dir.listFiles().length > 0) {
bm1 = BitmapFactory.decodeFile(bild.getAbsolutePath());
ivBild1.setImageBitmap(bm1);
} else {
Toast.makeText(getApplicationContext(), "1:Keine Dateien im Ordner", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getApplicationContext(), "2:Keine Dateien im Ordner", Toast.LENGTH_SHORT).show();
}
}catch(Exception ex)
{
Toast.makeText(getApplicationContext(), "Fehler: "+ ex.getMessage(), Toast.LENGTH_LONG).show();
}
//bm1 = BitmapFactory.decodeFile(bild.getAbsolutePath());
//ivBild1.setImageBitmap(bm1);
i++;
//name = "Bild_" + System.currentTimeMillis() + ".png";
bild = new File(dir, /*name*/i + ".png");
Toast.makeText(getApplicationContext(), "Neues Bild: " + bild.getAbsolutePath() ,Toast.LENGTH_SHORT).show();
}
@Override
protected void onStop()
{
super.onStop();
SharedPreferences mySPR = getSharedPreferences("MySPFILE",0);
SharedPreferences.Editor editor = mySPR.edit();
editor.putString ("myKey1", etKFZ1.getText().toString());
editor.commit();
}
}
es geht nur nicht ...
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