本APP用来演示Material Design控件的使用。
chenyangcun / materialdesignexample Goto Github PK
View Code? Open in Web Editor NEW本APP用来演示Material Design控件的使用。
Home Page: http://www.aswifter.com/2015/07/02/Material-Design-Example-5/
本APP用来演示Material Design控件的使用。
Home Page: http://www.aswifter.com/2015/07/02/Material-Design-Example-5/
是下面一段代码报空指针异常:
MainActivity.java
private void setUpProfileImage() {
findViewById(R.id.profile_image).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switchToBlog();
mDrawerLayout.closeDrawers();
mNavigationView.getMenu().getItem(1).setChecked(true);
}
});
}
异常信息如下:
Process: com.aswifter.materialexample, PID: 1632
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.aswifter.materialexample/com.aswifter.material.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at com.aswifter.material.MainActivity.setUpProfileImage(MainActivity.java:75)
at com.aswifter.material.MainActivity.onCreate(MainActivity.java:44)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
02-16 17:18:47.316 19628-19628/com.aswifter.materialexample E/dalvikvm: Could not find class 'android.support.design.internal.NavigationMenuPresenter', referenced from method android.support.design.widget.NavigationView.
02-16 17:18:47.317 19628-19628/com.aswifter.materialexample E/dalvikvm: Could not find class 'android.support.v7.internal.view.SupportMenuInflater', referenced from method android.support.design.widget.NavigationView.getMenuInflater
02-16 17:18:47.350 19628-19628/com.aswifter.materialexample E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.aswifter.materialexample/com.aswifter.material.MainActivity}: android.view.InflateException: Binary XML file line #28: Error inflating class android.support.design.widget.NavigationView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2365)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.access$600(ActivityThread.java:169)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1383)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5409)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:897)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:664)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #28: Error inflating class android.support.design.widget.NavigationView
at android.view.LayoutInflater.createView(LayoutInflater.java:613)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.aswifter.material.MainActivity.onCreate(MainActivity.java:31)
at android.app.Activity.performCreate(Activity.java:5141)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1146)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2329)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.access$600(ActivityThread.java:169)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1383)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5409)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:897)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:664)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
at android.view.LayoutInflater.createView(LayoutInflater.java:587)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.aswifter.material.MainActivity.onCreate(MainActivity.java:31)
at android.app.Activity.performCreate(Activity.java:5141)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1146)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2329)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.access$600(ActivityThread.java:169)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1383)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5409)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:897)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:664)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: android.support.design.internal.NavigationMenuPresenter
at android.support.design.widget.NavigationView.(NavigationView.java:80)
at android.support.design.widget.NavigationView.(NavigationView.java:92)
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
at android.view.LayoutInflater.createView(LayoutInflater.java:587)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.aswifter.material.MainActivity.onCreate(MainActivity.java:31)
at android.app.Activity.performCreate(Activity.java:5141)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1146)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2329)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.access$600(ActivityThread.java:169)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1383)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5409)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:897)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:664)
at dalvik.system.NativeStart.main(Native Method)
首先就是n长的build过程无结果,所以我手动把gradle删除了 然后重新杀死android studio 启动解决了这个问题,然后还是出错 最后我尝试吧一些build包含 删除然后还是有问题 github*什么arr已经不存在了,罢了。玩个屌。
这个库导致编译失败,不太明白什么原因
Error:A problem occurred configuring project ':app'.
Could not resolve all dependencies for configuration ':app:_debugCompile'.
Could not find com.afollestad:material-dialogs:0.7.6.0.
Searched in the following locations:
https://jcenter.bintray.com/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.pom
https://jcenter.bintray.com/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.jar
file:/E:/android/adt-bundle-windows-x86_64-20130917/sdk/extras/android/m2repository/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.pom
file:/E:/android/adt-bundle-windows-x86_64-20130917/sdk/extras/android/m2repository/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.jar
file:/E:/android/adt-bundle-windows-x86_64-20130917/sdk/extras/google/m2repository/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.pom
file:/E:/android/adt-bundle-windows-x86_64-20130917/sdk/extras/google/m2repository/com/afollestad/material-dialogs/0.7.6.0/material-dialogs-0.7.6.0.jar
Required by:
MaterialDesignExample-master:app:unspecified
setCurrentItem设成0的时候,一开始加载完页面后,并没有改变字体颜色
点击也不能改变颜色
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