【发布时间】：2018-01-06 12:34:25
【问题描述】：
我是一名编程初学者，并尝试在 android studio 中处理示例项目，但是当我在手机中运行它时，我的应用程序崩溃了。
请帮我。可以做什么？
我在登录 logcat 时收到此错误。
01-06 13:18:20.778 13471-13471/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.hof_university.chethan.chatmessenger, PID: 13471
java.lang.NoSuchMethodError: No static method getFont(Landroid/content/Context;ILandroid/util/TypedValue;ILandroid/widget/TextView;)Landroid/graphics/Typeface; in class Landroid/support/v4/content/res/ResourcesCompat; or its super classes (declaration of 'android.support.v4.content.res.ResourcesCompat' appears in /data/app/com.hof_university.chethan.chatmessenger-2/split_lib_dependencies_apk.apk)
at android.support.v7.widget.TintTypedArray.getFont(TintTypedArray.java:119)
at android.support.v7.widget.AppCompatTextHelper.updateTypefaceAndStyle(AppCompatTextHelper.java:208)
at android.support.v7.widget.AppCompatTextHelper.loadFromAttributes(AppCompatTextHelper.java:110)
at android.support.v7.widget.AppCompatTextHelperV17.loadFromAttributes(AppCompatTextHelperV17.java:38)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:81)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:71)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:67)
at android.support.v7.widget.Toolbar.setTitle(Toolbar.java:753)
at android.support.v7.widget.ToolbarWidgetWrapper.setTitleInt(ToolbarWidgetWrapper.java:261)
at android.support.v7.widget.ToolbarWidgetWrapper.setWindowTitle(ToolbarWidgetWrapper.java:243)
at android.support.v7.widget.ActionBarOverlayLayout.setWindowTitle(ActionBarOverlayLayout.java:621)
at android.support.v7.app.AppCompatDelegateImplV9.onTitleChanged(AppCompatDelegateImplV9.java:631)
at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:328)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.hof_university.chethan.chatmessenger.MainActivity.onCreate(MainActivity.java:19)
at android.app.Activity.performCreate(Activity.java:6177)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1112)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2541)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2685)
at android.app.ActivityThread.access$900(ActivityThread.java:188)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1530)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:210)
at android.app.ActivityThread.main(ActivityThread.java:5839)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1113)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:879)
主活动
public class MainActivity extends AppCompatActivity {
private EditText editMessage;
private DatabaseReference mDatabase;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editMessage = (EditText) findViewById(R.id.editMessageE);
mDatabase = FirebaseDatabase.getInstance().getReference().child("Messages");
}
public void sendButtonClicked(View view){
final String messageValue = editMessage.getText().toString().trim();
if (!TextUtils.isEmpty(messageValue)){
final DatabaseReference newPost = mDatabase.push();
newPost.child("content").setValue(messageValue);
}
}
}
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build.gradle -
欢迎来到 SO。请完成游览，您将了解How to create a Minimal, Complete, and Verifiable example 并相应地修改问题以最小化工作示例。如果不发布您的代码，您可能会删除您的问题。使用您声明的跟踪代码和错误...人们更愿意帮助您，以便双方都可以学习。尽情享受吧 ;-)
标签： android