Question

我创建了一个简单的布局，总共有4个按钮：布局底部的3个按钮（在RelativeLayout中）和几乎在屏幕中间的巨大按钮上。

在冰淇淋三明治和Jellybean上，我可以点击任何按钮，一切正常（即相应的onClick功能被调用）但奇怪的是姜饼底部工作的3个按钮中的任何一个但不是中间。 onClick会触发许多指令，所有指令都没有被执行，据我所知，它没有被调用，我不知道为什么。

布局代码如下。非常感谢任何帮助！

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/main_off"
android:orientation="vertical"
android:weightSum="10" >

    <ImageButton
        android:id="@+id/button_activate"
        android:layout_width="155dp"
        android:layout_height="0dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="170dp"
        android:layout_weight="7.2"
        android:background="@drawable/transparent"
        android:clickable="true"
        android:contentDescription="@string/app_name"
        android:onClick="activate"
        android:src="@drawable/transparent" />

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="30dp"
        android:layout_marginTop="80dp"
        android:layout_weight="2" >

        <ImageButton
            android:id="@+id/button_help"
            android:layout_width="90dp"
            android:layout_height="fill_parent"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="0dp"
            android:background="@drawable/transparent"
            android:clickable="true"
            android:contentDescription="@string/app_name"
            android:onClick="openhelp"
            android:src="@drawable/transparent" />


        <ImageButton
            android:id="@+id/button_settings"
            android:layout_width="55dp"
            android:layout_height="fill_parent"
            android:layout_alignParentLeft="true"
            android:layout_marginTop="0dp"
            android:layout_toLeftOf="@+id/button_help"
            android:background="@drawable/transparent"
            android:clickable="true"
            android:contentDescription="@string/app_name"
            android:onClick="opensettings"
            android:src="@drawable/transparent" />


        <ImageButton
            android:id="@+id/button_contact"
            android:layout_width="70dp"
            android:layout_height="fill_parent"
            android:layout_alignParentRight="true"
            android:layout_marginTop="0dp"
            android:layout_toRightOf="@+id/button_help"
            android:background="@drawable/transparent"
            android:clickable="true"
            android:contentDescription="@string/app_name"
            android:onClick="opencontact"
            android:src="@drawable/transparent" />

    </RelativeLayout>

</LinearLayout>

调用布局的活动（main.xml）：

//bunch of imports

public class MainActivity extends Activity {

@Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    LinearLayout layout = (LinearLayout) findViewById (R.id.main_layout);

    boolean serviceOn = isMyServiceRunning();

    if(serviceOn==true) layout.setBackgroundResource(R.drawable.main_on);
    else if (serviceOn==false) layout.setBackgroundResource(R.drawable.main_off); 
}

@Override
protected void onResume() {
    super.onResume();
    LinearLayout layout = (LinearLayout) findViewById (R.id.main_layout);

    boolean serviceIsOn = isMyServiceRunning();

    if(serviceIsOn==true) layout.setBackgroundResource(R.drawable.main_on);
    else if (serviceIsOn==false) layout.setBackgroundResource(R.drawable.main_off);
}



public void activate(View v){
    LinearLayout layout = (LinearLayout) findViewById (R.id.main_layout);
    Resources res = getResources();

    Drawable on = res.getDrawable(R.drawable.main_on);
    Drawable off = res.getDrawable(R.drawable.main_off);

    if (layout.getBackground().getConstantState() == off.getConstantState()){
        layout.setBackgroundResource(R.drawable.main_on);
        Toast.makeText(getApplicationContext(), "App has been activated", Toast.LENGTH_SHORT).show();
        turnon();
    }
    else if (layout.getBackground().getConstantState() == on.getConstantState()){
        layout.setBackgroundResource(R.drawable.main_off);
        Toast.makeText(getApplicationContext(), "App has been deactivated", Toast.LENGTH_SHORT).show();
        turnoff();
    }
}

}

Answer 1

我可以在我的模拟器上为2.2和2.3运行。

我唯一可以建议的是尝试删除drawables（可能是某些设置搞砸了），或者尝试使你的相对布局高度为0dp，因为你使用的是weight_sum

Android - ImageButton onClick在ICS和JB中工作但不在GB中

1 个答案: