启动器 Activity 未启动，在 Android Studio 中按下“运行”按钮时会崩溃。虽然那里没有太多代码，但仍然如此。我已将 logcat 粘贴到其下方，将我带到 setContentView(R.layout.activity_main); 处的 MainActivity
我尝试过添加
`res/color/abc_hint_foreground_material_dark.xml`
到目录，但仍然出现错误，之前我发布的屏幕截图得到了 3 VoteDown 但这并没有解决我的问题，如果您不知道，请不要打扰。在发布此问题时，stackover flow 继续问我要添加更多详细信息，我应该添加什么？
11-06 17:06:02.890 21445-21445/com.dekhou.UrduKeyboard E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.dekhou.UrduKeyboard, PID: 21445
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dekhou.UrduKeyboard/com.dekhou.UrduKeyboard.MainActivity}: android.content.res.Resources$NotFoundException: File res/color/abc_hint_foreground_material_dark.xml from color state list resource ID #0x7f0c0050
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2432)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2492)
at android.app.ActivityThread.access$900(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1358)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5458)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
Caused by: android.content.res.Resources$NotFoundException: File res/color/abc_hint_foreground_material_dark.xml from color state list resource ID #0x7f0c0050
at android.content.res.Resources.loadColorStateListForCookie(Resources.java:2810)
at android.content.res.Resources.loadColorStateList(Resources.java:2759)
at android.content.res.TypedArray.getColorStateList(TypedArray.java:487)
at android.widget.TextView.<init>(TextView.java:749)
at android.widget.TextView.<init>(TextView.java:674)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:62)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:58)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:54)
at android.support.v7.widget.Toolbar.setTitle(Toolbar.java:756)
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:615)
at android.support.v7.app.AppCompatDelegateImplV9.onTitleChanged(AppCompatDelegateImplV9.java:636)
at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:333)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.dekhou.UrduKeyboard.MainActivity.onCreate(MainActivity.java:28)
at android.app.Activity.performCreate(Activity.java:6323)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2385)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2492)
at android.app.ActivityThread.access$900(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1358)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5458)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
Caused by: java.lang.NumberFormatException: Invalid float: "0.70000005dip"
at java.lang.StringToReal.invalidReal(StringToReal.java:63)
at java.lang.StringToReal.initialParse(StringToReal.java:164)
at java.lang.StringToReal.parseFloat(StringToReal.java:323)
at java.lang.Float.parseFloat(Float.java:306)
at android.content.res.TypedArray.getFloat(TypedArray.java:398)
at android.content.res.ColorStateList.inflate(ColorStateList.java:275)
at android.content.res.ColorStateList.createFromXmlInner(ColorStateList.java:222)
at android.content.res.ColorStateList.createFromXml(ColorStateList.java:201)
at android.content.res.Resources.loadColorStateListForCookie(Resources.java:2806)
at android.content.res.Resources.loadColorStateList(Resources.java:2759)
at android.content.res.TypedArray.getColorStateList(TypedArray.java:487)
at android.widget.TextView.<init>(TextView.java:749)
at android.widget.TextView.<init>(TextView.java:674)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:62)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:58)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:54)
at android.support.v7.widget.Toolbar.setTitle(Toolbar.java:756)
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:615)
at android.support.v7.app.AppCompatDelegateImplV9.onTitleChanged(AppCompatDelegateImplV9.java:636)
at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:333)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.dekhou.UrduKeyboard.MainActivity.onCreate(MainActivity.java:28)
at android.app.Activity.performCreate(Activity.java:6323)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2385)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2492)
at android.app.ActivityThread.access$900(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1358)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5458)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)'
abc_hint_foreground_material_dark.xml
<item android:alpha="@dimen/hint_pressed_alpha_material_dark" android:color="@color/foreground_material_dark" android:state_pressed="true" android:state_enabled="true"/>
<item android:alpha="@dimen/hint_alpha_material_dark" android:color="@color/foreground_material_dark"/>
</selector>
最佳答案
基于
android:alpha="@dimen/hint_alpha_material_dark
和
Caused by: java.lang.NumberFormatException: Invalid float: "0.70000005dip"
您似乎正在尝试使用尺寸作为 alpha 值。使用 float 资源，例如
android:alpha="@integer/hint_alpha_material_dark_float"
以及值(value)观资源:
<item name="hint_alpha_material_dark_float" format="float" type="integer">0.7</item>
关于java - 启动器 Activity 未启动并崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47133434/