fabbychips的专栏

类CustomCountryListpackage com.clx.androidtest0526;import android.app.Activity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.ImageView;import and

It happens from time to time in Android Studio 3. This are steps to try to resolve this issue:invalidate cache and restart studio; choose different emulator from drop-down menu; refresh layout by ...

如果手机设备上已经安装过了app, 点击 工具栏中的Apply Changes 去更新app.或者点击Run去安装和运行app.

Caused by: com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking failedE:\git_code\helloapp\app\src\main\res\layout\activity_main.xml:2: error: resource color/green(aka com.w...

This view is not constrained. It only has designtime positions, so it will jump to (0,0) at runtime unless you add the constraints The layout editor allows you to place widgets anywhere on the canvas...