AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.train.openso.myapplication_a" > <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" 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="com.train.openso.myapplication_a.DisplayMessageActivity" /> </application> </manifest>
MainActivity.java
package com.train.openso.myapplication_a; import android.content.Intent; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.EditText; public class MainActivity extends ActionBarActivity { public final static String EXTRA_MESSAGE = "com.train.openso.MESSAGE"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void sendMessage(View view){ // Do something in response to button Intent intent; intent = new Intent(this, DisplayMessageActivity.class); EditText editText = (EditText) findViewById(R.id.edit_message); String message = editText.getText().toString(); intent.putExtra(EXTRA_MESSAGE, message); startActivity(intent); } }
Create the Second Activity
DisplayMessageActivity.java
package com.train.openso.myapplication_a; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.widget.TextView; /** * Created by openso on 2015/7/7. */ public class DisplayMessageActivity extends Activity{ @Override public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); Intent intent = getIntent(); String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE); //Display the Message TextView textView = new TextView(this); textView.setTextSize(40); textView.setText(message); setContentView(textView); } }
activity.main.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="horizontal"> <EditText android:layout_weight="1" android:id="@+id/edit_message" android:layout_width="0dp" android:layout_height="wrap_content" android:hint="@string/edit_message" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button_send" android:onClick="sendMessage" /> </LinearLayout>
参考:
public Intent putExtra (String name, int[] value)
Add extended data to the intent. The name must include a package prefix, for example the app com.android.contacts would use names like "com.android.contacts.ShowAll".
Parameters
name | The name of the extra data, with package prefix. |
---|---|
value | The int array data value. |
时间: 2024-07-28 12:33:24