根据Android开发人员站点,我们可以AnimatorSet从位于路径上的xml文件以编程方式加载类,如下所示:res/animator/filename.xml.所以我创建了一个示例项目并尝试查看它是否真的有效,但事实并非如此; 什么都没发生.如果我能理解缺少的东西和/或我做错了什么,那将是非常好的.提前致谢!下面是我的animator xml文件和加载xml的Java代码:
RES /动画/ sample.xml中:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:ordering="sequentially"
>
<set>
<objectAnimator
android:propertyName="x"
android:duration="500"
android:valueTo="400"
android:valueType="intType"
/>
<objectAnimator
android:propertyName="y"
android:duration="500"
android:valueTo="300"
android:valueType="intType"
/>
</set>
<objectAnimator
android:propertyName="alpha"
android:duration="500"
android:valueTo="1f"
/>
</set>
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这是我的Java代码加载上面的xml文件:
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override public void onClick(View view) {
// Load and start Animaton
AnimatorSet animSet =
(AnimatorSet) AnimatorInflater.loadAnimator(view.getContext(), R.animator.sample);
animSet.setTarget(view);
animSet.start();
}
});
Run Code Online (Sandbox Code Playgroud) 在Firebase SDK设置页面上,它说,
apply plugin: 'com.android.application'
android {
// ...
}
dependencies {
// ...
compile 'com.google.firebase:firebase-core:9.0.2'
}
// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'
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这是为什么?订购是否重要?
我目前正在为Android开发一个简单的RSS应用,该应用的功能之一是使用chrome自定义标签打开网址;我已经根据文档中提供的示例实现了Chrome自定义标签。
虽然大多数url通过将其解析为Uri都已成功显示,但是我传递的其中一个url在自定义标签试图打开时导致崩溃,该格式类似于以下格式:
标记:github.com,2008:PullRequestReviewCommentEvent / 4172209621
我猜我不应该只用Uri.parse()方法解析这个String url ,而是有点被困住了,想知道在这里做什么。
我也猜想这是与此类似的问题: Chrome自定义标签无法打开其他应用
崩溃似乎没有可以解决此意图的可用活动:
FATAL EXCEPTION: main
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=tag:github.com,2008:PullRequestReviewCommentEvent/4172209621 (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1798)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512)
at android.app.Activity.startActivityForResult(Activity.java:3930)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
at android.app.Activity.startActivityForResult(Activity.java:3890)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)
at android.app.Activity.startActivity(Activity.java:4213)
at android.support.v4.app.ActivityCompatJB.startActivity(ActivityCompatJB.java:27)
at android.support.v4.app.ActivityCompat.startActivity(ActivityCompat.java:134)
at android.support.customtabs.CustomTabsIntent.launchUrl(CustomTabsIntent.java:244)
at butterknife.internal.DebouncingOnClickListener.onClick(DebouncingOnClickListener.java:22)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21155)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5422)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
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以下是我到目前为止编写的有关使用Chrome自定义标签打开URL的源代码:
public class ArticleFragment extends Fragment {
@OnClick(R.id.button_see_more) …Run Code Online (Sandbox Code Playgroud) When I build my app with minifyEnabled = true and try to start the app, app crashes right after it launches with the following crash log:
2021-05-29 22:30:37.652 16541-16541/com.my.app.package.name E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.my.app.package.name, PID: 16541
java.lang.IncompatibleClassChangeError: Class j$.util.concurrent.i implements non-interface class e.a (declaration of …Run Code Online (Sandbox Code Playgroud)