首先在目录 “res/layout/” 下创建两个XML layout文件 :
res/layout/activity_main.xml <RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" android:id="@+id/text_view"/> </RelativeLayout> res/layout/activity_other.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" > <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:text="@string/second_page"/> </LinearLayout>
2. Activities
创建两个activity类
MainActivity.java –> activity_main.xml
OtherActivity.java –> activity_other.xml
切换关键代码 Intent intent = new Intent(MainActivity.this, OtherActivity.class); startActivity(intent);
MainActivity.java package com.lance.changescreen; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.widget.TextView; public class MainActivity extends Activity { private TextView mTextView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTextView = (TextView)findViewById(R.id.text_view); addTextViewListener(); } /** * 点击mTextView, 切换到另外一个屏幕 */ private void addTextViewListener() { mTextView.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Intent intent = new Intent(MainActivity.this, OtherActivity.class); startActivity(intent); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } OtherActivity.java package com.lance.changescreen; import android.app.Activity; import android.os.Bundle; public class OtherActivity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_other); } }
3. AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.lance.changescreen" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.lance.changescreen.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> <!-- add OtherActivity--> <activity android:label="@string/app_name" android:name="com.lance.changescreen.OtherActivity"/> </application> </manifest>