标签:world ring 文件 com 继承 bundle state creat tac
1.新建类继承Activity或其子类,现在一般继承AppCompatActivity
public class TestActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
}
}
2.在AndroidManifest文件中声明这个activity
<activity android:name=".TestActivity">
</activity>
3.创建layout布局文件并在activity中的onCreate中设置
public class TestActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
}
}
在AndroidManifest中设置启动activity
<activity android:name=".HelloWorldActivity"
android:label="lidahua"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
不适用系统自带的titlebar
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.AppCompat.Light.NoActionBar">
<activity android:name=".HelloWorldActivity"
android:label="lidahua" --给titlebar重新设置标题
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".TestActivity">
</activity>
</application>
</manifest>
标签:world ring 文件 com 继承 bundle state creat tac
原文地址:https://www.cnblogs.com/AppTester/p/9937679.html