以编程方式设置视图宽度

Question

我正在尝试在代码中设置视图的宽度和高度,以显示我正在处理的免费应用的广告.除了此广告之外,所有UI都以XML格式完成.以下是显示广告的代码.它在onCreate.

AdView adView = new AdView(this,"ad_url","my_ad_key",true,true);
LinearLayout layout = (LinearLayout) findViewById(R.id.testing);
adView.setAdListener(this);
layout.addView(adView);

这会导致广告显示如下.正如您所看到的,宽度并不完全填满整个页面.

现在,当我将代码更改为此尝试设置大小时:

AdView adView = new AdView(this,"ad_url","my_ad_key",true,true);
LinearLayout layout = (LinearLayout) findViewById(R.id.testing);
adView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, 
                       LayoutParams.WRAP_CONTENT));
adView.setAdListener(this);
layout.addView(adView);

我明白了:

我尝试了所有不同的组合,FILL_PARENT并且WRAP_CONTENT所有组合都具有相同的结果.有什么我想念的吗？或者另一种方法,我可以让广告填充设备的宽度而不填充高度？非常感谢任何建议和帮助.

编辑当我尝试将其放入XML时我得到一个例外:

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

<fragment
    android:name="com.jasoncrosby.app.tipcalculatorfree.MainButtonFragment"
android:id="@+id/button_frag"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>
<com.adsdk.sdk.banner.AdView
    android:id="@+id/banner"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"/>

</LinearLayout>

> 09-09 22:39:43.448: E/AndroidRuntime(586): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jasoncrosby.app.tipcalculatorfree/com.jasoncrosby.app.tipcalculatorfree.MainActivity}: android.view.InflateException: Binary XML file line #14: Error inflating class com.adsdk.sdk.banner.AdView
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread.access$1500(ActivityThread.java:122)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.os.Handler.dispatchMessage(Handler.java:99)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.os.Looper.loop(Looper.java:132)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread.main(ActivityThread.java:4025)
09-09 22:39:43.448: E/AndroidRuntime(586):  at java.lang.reflect.Method.invokeNative(Native Method)
09-09 22:39:43.448: E/AndroidRuntime(586):  at java.lang.reflect.Method.invoke(Method.java:491)
09-09 22:39:43.448: E/AndroidRuntime(586):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
09-09 22:39:43.448: E/AndroidRuntime(586):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
09-09 22:39:43.448: E/AndroidRuntime(586):  at dalvik.system.NativeStart.main(Native Method)
09-09 22:39:43.448: E/AndroidRuntime(586): Caused by: android.view.InflateException: Binary XML file line #14: Error inflating class com.adsdk.sdk.banner.AdView
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.createView(LayoutInflater.java:579)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:671)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:724)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
09-09 22:39:43.448: E/AndroidRuntime(586):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:223)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.Activity.setContentView(Activity.java:1780)
09-09 22:39:43.448: E/AndroidRuntime(586):  at com.jasoncrosby.app.tipcalculatorfree.MainActivity.onCreate(MainActivity.java:95)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
09-09 22:39:43.448: E/AndroidRuntime(586):  ... 11 more
09-09 22:39:43.448: E/AndroidRuntime(586): Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]
09-09 22:39:43.448: E/AndroidRuntime(586):  at java.lang.ClassMembers.getConstructorOrMethod(ClassMembers.java:235)
09-09 22:39:43.448: E/AndroidRuntime(586):  at java.lang.Class.getConstructor(Class.java:459)
09-09 22:39:43.448: E/AndroidRuntime(586):  at android.view.LayoutInflater.createView(LayoutInflater.java:551)
09-09 22:39:43.448: E/AndroidRuntime(586):  ... 21 more

Answer 1

您可以使用下面的代码,如果您只需要影响特定值,而不是触及其他值:

view.getLayoutParams().width = newWidth;

Answer 2

此代码可让您将横幅填充到最大宽度并保持比率.这只适用于肖像.您必须在旋转设备时重新创建广告.在风景中你应该保留广告,因为它会变得非常模糊.

Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
double ratio = ((float) (width))/300.0;
int height = (int)(ratio*50);

AdView adView = new AdView(this,"ad_url","my_ad_key",true,true);
LinearLayout layout = (LinearLayout) findViewById(R.id.testing);
mAdView.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.FILL_PARENT,height));
adView.setAdListener(this);
layout.addView(adView);

Answer 3

在代码中添加以下行:

spin27.setLayoutParams(new LinearLayout.LayoutParams(200, 120));

Answer 4

yourView.setLayoutParams(new LinearLayout.LayoutParams(width, height));