Hallo Akanksha Gahalout gegeben, wenn ich verstehe Ihre Frage, können Sie Daten zwischen zwei Aktivitäten und umgekehrt übergeben wollen, wenn dies der Fall, sollten Sie Intent und PutExtrat verwenden() verwenden Methode Um Daten von einer Aktivität zu einer anderen zu übertragen, können Sie Daten aus der zweiten Aktivität mithilfe von Bundle und getExtras() Methode wiederherstellen.
Hier ist ein Beispiel:
FirstActivity.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="${relativePackage}.${activityClass}" >
<EditText
android:id="@+id/EditTextFirstActivity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/StudentName"
android:ellipsize="start"
android:gravity="center_horizontal"
android:labelFor="@+id/EditText1" />
<Button
android:id="@+id/buttonFirstActivity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/OK" />
<TextView
android:id="@+id/TextViewFirstActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#000000"
android:ellipsize="start"
android:gravity="center_horizontal"
android:textSize="20sp" />
</LinearLayout>
FirstActivity.java:
package dz.A;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class FirstActivity extends Activity implements OnClickListener {
private TextView textView;
private EditText editTextFirstActivity;
private Button buttonFirstActivity;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.first_activity);
editTextFirstActivity = (EditText) findViewById(R.id.EditTextFirstActivity);
textView = (TextView) findViewById(R.id.TextViewFirstActivity);
buttonFirstActivity = (Button) findViewById(R.id.buttonFirstActivity);
buttonFirstActivity.setOnClickListener(this);
Intent iin = getIntent();
Bundle b = iin.getExtras();
if (b != null) {
String marks = (String) b.get("STUDENT_MARKS");
textView.setText(marks);
}
}
@Override
public void onClick(View v) {
if (v == buttonFirstActivity) {
Log.i("OK", "onClickOK");
Intent i = new Intent(this, SecondActivity.class);
Log.i("OK", "IntentOK");
Log.i("OK", "startActivity(i)OK");
String studentName = editTextFirstActivity.getText().toString()
.trim();
Log.i("OK", "studentNameOK : " + studentName);
i.putExtra("STUDENT_NAME", "Student Name : " + studentName);
Log.i("OK", "i.putExtraOK");
startActivity(i);
finish();
Log.i("OK", "finish()OK");
}
}
}
SecondActivity.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/EditTextSecondActivity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="start"
android:gravity="center_horizontal"
android:hint="@string/Marks"
android:inputType="number"
android:labelFor="@+id/EditText1" />
<Button
android:id="@+id/buttonSecondActivity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/sendMarks" />
<TextView
android:id="@+id/TextViewSecondActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#000000"
android:textSize="20sp" />
</LinearLayout>
SecondActivity.java:
package dz.A;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class SecondActivity extends Activity implements OnClickListener {
private TextView textViewSecondActivity;
private EditText editTextSecondActivity;
private Button buttonSecondActivity;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_activity);
textViewSecondActivity = (TextView) findViewById(R.id.TextViewSecondActivity);
editTextSecondActivity = (EditText) findViewById(R.id.EditTextSecondActivity);
buttonSecondActivity = (Button) findViewById(R.id.buttonSecondActivity);
buttonSecondActivity.setOnClickListener(this);
Intent iin = getIntent();
Bundle b = iin.getExtras();
if (b != null) {
String studentName = (String) b.get("STUDENT_NAME");
textViewSecondActivity.setText(studentName);
}
}
@Override
public void onClick(View v) {
if (v == buttonSecondActivity) {
String marks = editTextSecondActivity.getText().toString().trim();
Intent i = new Intent(this, FirstActivity.class);
i.putExtra("STUDENT_MARKS", "Student Marks : " + marks);
startActivity(i);
finish();
}
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="dz.A"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="23" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="dz.A.FirstActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="dz.A.SecondActivity"/>
</application>
</manifest>
String.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Project</string>
<string name="hello_world">Hello world!</string>
<string name="OK">OK</string>
<string name="Marks">Marks</string>
<string name="sendMarks">sendMarks</string>
<string name="StudentName">StudentName</string>
</resources>
Ich hoffe, dass dir das hilft.
Entschuldigung SO ist kein kostenloser Kodierungsdienst. –
Wenn Sie die Aktivitäten bereits erstellt haben, sollten Sie den Code bereitstellen, den Sie bisher haben. – Laurel