Hi I made gym app so the idea is that to implement QR Code scanner in the app so when I scan the QR code example for bench directly app to open the bench exercise every exercise is in different fragment so how can I do that I need to open a specific exercise by scanning exercise-specific QR codes.Thanks for your help also I can post source code of my app.
Android Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.hristijan.aleksandar.gymworkout.gymworkout">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".Splashscreen"
android:label="@string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:label="@string/app_name">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="gymassistant" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="com.journeyapps.barcodescanner.CaptureActivity"
android:screenOrientation="fullSensor"
tools:replace="screenOrientation" />
<activity android:name=".BmiActivity" />
<activity android:name=".QrActivity"></activity>
</application>
QRActivity
package com.hristijan.aleksandar.gymworkout.gymworkout;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
public class QrActivity extends AppCompatActivity {
Button scan_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qr);
scan_btn = (Button) findViewById(R.id.scan_btn);
final Activity activity =this;
scan_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
IntentIntegrator integrator = new IntentIntegrator(activity);
integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
integrator.setPrompt("Scan");
integrator.setCameraId(0);
integrator.setBeepEnabled(false);
integrator.setBarcodeImageEnabled(false);
integrator.initiateScan();
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result != null) {
if(result.getContents() == null) {
Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
} else {
Uri url = Uri.parse(result.getContents());
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(url);
startActivity(i);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
MainActivity
package com.hristijan.aleksandar.gymworkout.gymworkout;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Handler;
import android.support.v4.app.FragmentTransaction;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.Toast;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FirstFragment fragment = new FirstFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment,"fragment");
fragmentTransaction.commit();
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.first_fragment) {
setTitle("Home");
FirstFragment fragment = new FirstFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment,"bench");
fragmentTransaction.commit();
} else if (id == R.id.second_fragment) {
setTitle("Bench Press");
SecondFragment fragment = new SecondFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment,"new1");
fragmentTransaction.commit();
} else if (id == R.id.third_fragment) {
setTitle("Incline Bench Press");
ThirdFragment fragment = new ThirdFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment,"new2");
fragmentTransaction.commit();
} else if (id == R.id.blank_fragment) {
setTitle("About");
BlankFragment fragment = new BlankFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame,fragment,"new2");
fragmentTransaction.commit();
} else if (id == R.id.bmi_calculator) {
setTitle("Bmi Calculator");
Intent i = new Intent(MainActivity.this,BmiActivity.class);
startActivity(i);
} else if (id == R.id.qr_activity) {
setTitle("Scan QR Code");
Intent i = new Intent(MainActivity.this,QrActivity.class);
startActivity(i);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
In QRActivity.java
Change
Uri url = Uri.parse(result.getContents());
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(url);
startActivity(i);
into
Intent i = new Intent(QrActivity.this, MainActivity.class);
i.putExtra("qrcode_result", result.getContents());
startActivity(i);
Edit: You need to check s is null
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String s = getIntent().getStringExtra("qrcode_result");
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
if (s != null) {
if (s.equals("Bench Press")) {
setTitle("Bench Press");
SecondFragment fragment = new SecondFragment();
fragmentTransaction.replace(R.id.frame, fragment, "new1");
fragmentTransaction.commit();
} // else if(s.equals("...")){}
else{
Toast.makeText(this,"scanned QR code that doesn't exist",Toast.LENGTH_SHORT).show();
setTitle("Scan QR Code");
Intent i = new Intent(MainActivity.this, QrActivity.class);
startActivity(i);
}
} else { // not using QR Code scanner
FirstFragment fragment = new FirstFragment();
fragmentTransaction.replace(R.id.frame, fragment, "fragment");
fragmentTransaction.commit();
}
}
And it worked:)