Getting Start
ここ見てやった事をまとめた記事です。 Eclipse も IntellJ といった IDE を使わないで vim とコマンドラインでやってみました。
http://developer.android.com/training/index.html
Creating an Android Project
% android list targets % android create project --target android-18 --name MyFirstApp --path ~/MyFirstApp --activity MainActivity --package com.example.myfirstapp % cd MyFirstApp
Running Your App
実機がつながっている事を確認
% adb devices List of devices attached 015d4b33be40260a device
build & install
% ant debug % adb install bin/MyFirstApp-debug.apk
Failure [INSTALL_FAILED_ALREADY_EXISTS] となった場合は以下
% adb install -r bin/MyFirstApp-debug.apk
Building a Simple User Interface
Edit: res/layout/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:id="@+id/edit_message" android:layout_weight="1" 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" /> </LinearLayout>
And Edit: res/values/strings.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">My First App</string> <string name="edit_message">Enter a message</string> <string name="button_send">Send</string> <string name="action_settings">Settings</string> <string name="title_activity_main">MainActivity</string> </resources>
rebuild
% ant debug % adb install -r bin/MyFirstApp-debug.apk
Starting Another Activitys
Edit: AndroidManifest.xm
--- a/AndroidManifest.xml +++ b/AndroidManifest.xml @@ -11,5 +11,13 @@ <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> + <activity + android:name="com.example.myfirstapp.DisplayMessageActivity" + android:label="@string/title_activity_display_message" + android:parentActivityName="com.example.myfirstapp.MainActivity" > + <meta-data + android:name="android.support.PARENT_ACTIVITY" + android:value="com.example.myfirstapp.MainActivity" /> + </activity> </application> </manifest>
Edit: res/laytou/main.xml
--- a/res/layout/main.xml +++ b/res/layout/main.xml @@ -11,5 +11,6 @@ <Button android:layout_width="wrap_content" android:layout_height="wrap_content" - android:text="@string/button_send" /> + android:text="@string/button_send" + android:onClick="sendMessage" /> </LinearLayout>
MainActivity に sendMessage を追加
Edit: src/com/example/myfirstapp/MainActivity.java
--- a/src/com/example/myfirstapp/MainActivity.java +++ b/src/com/example/myfirstapp/MainActivity.java @@ -2,9 +2,14 @@ package com.example.myfirstapp; import android.app.Activity; import android.os.Bundle; +import android.view.View; +import android.content.Intent; +import android.widget.EditText; public class MainActivity extends Activity { + public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE"; + /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) @@ -12,4 +17,12 @@ public class MainActivity extends Activity super.onCreate(savedInstanceState); setContentView(R.layout.main); } + + public void sendMessage(View view) { + 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); + } }
Add: src/com/example/myfirstapp/DisplayMessageActivity.java
package com.example.myfirstapp; import android.app.Activity; import android.os.Bundle; import android.annotation.SuppressLint; import android.content.Intent; import android.widget.EditText; import android.widget.TextView; public class DisplayMessageActivity extends Activity { @SuppressLint("NewApi") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get the message from the intent Intent intent = getIntent(); String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE); // Create the text view TextView textView = new TextView(this); textView.setTextSize(40); textView.setText(message); // Set the text view as the activity layout setContentView(textView); } }
build & install
% and debug % adb install -r bin/MyFirstApp-debug.apk