Java 如何使用com.google.android.material对象并更改按钮背景
我有一个问题,我想更改按钮的颜色并使用Java 如何使用com.google.android.material对象并更改按钮背景,java,android,androidx,Java,Android,Androidx,我有一个问题,我想更改按钮的颜色并使用com.google.android.material对象 我发现,当我更改主题中的行时: 到此行:我可以更改按钮的背景色。。等等 但当我这样做时,我也不能使用com.google.android.material.textfield.TextInputLayout和com.google.android.material.textfield.textinputtext或任何其他com.google.android.material对象 (我换行后) 当我尝试
com.google.android.material
对象
我发现,当我更改主题中的行时:
到此行:
我可以更改按钮的背景色。。等等
但当我这样做时,我也不能使用com.google.android.material.textfield.TextInputLayout
和com.google.android.material.textfield.textinputtext
或任何其他com.google.android.material
对象
(我换行后)
当我尝试启动活动时,应用程序会崩溃,并出现以下错误:
Logcat错误
2021-04-03 19:22:05.558 29774-29774/com.example.teorialearning E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.teorialearning, PID: 29774
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.teorialearning/com.example.teorialearning.Activies.RegisterActivity}: android.view.InflateException: Binary XML file line #28: Binary XML file line #28: Error inflating class com.google.android.material.textfield.TextInputLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: android.view.InflateException: Binary XML file line #28: Binary XML file line #28: Error inflating class com.google.android.material.textfield.TextInputLayout
Caused by: android.view.InflateException: Binary XML file line #28: Error inflating class com.google.android.material.textfield.TextInputLayout
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:92)
at com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:86)
at com.example.teorialearning.Activies.RegisterActivity.onCreate(RegisterActivity.java:19)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.IllegalArgumentException: This component requires that you specify a valid TextAppearance attribute. Update your app theme to inherit from Theme.MaterialComponents (or a descendant).
at com.google.android.material.internal.ThemeEnforcement.checkTextAppearance(ThemeEnforcement.java:187)
at com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes(ThemeEnforcement.java:118)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:463)
at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:422)
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:92)
at com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:86)
at com.example.teorialearning.Activies.RegisterActivity.onCreate(RegisterActivity.java:19)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
2021-04-03 19:22:05.558 29774-29774/com.example.teorialearning E/AndroidRuntime:致命异常:main
流程:com.example.teorialearning,PID:29774
java.lang.RuntimeException:无法启动活动组件信息{com.example.teorialearning/com.example.teorialearning.Activies.RegisterActivity}:android.view.InflateException:二进制XML文件行#28:二进制XML文件行#28:膨胀类com.google.android.material.textfield.TextInputLayout时出错
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)上
位于android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
位于android.app.ActivityThread.-wrap12(ActivityThread.java)
在android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)上
位于android.os.Handler.dispatchMessage(Handler.java:102)
位于android.os.Looper.loop(Looper.java:154)
位于android.app.ActivityThread.main(ActivityThread.java:6119)
位于java.lang.reflect.Method.invoke(本机方法)
在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)上
位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
原因:android.view.InflateException:二进制XML文件行#28:二进制XML文件行#28:对类com.google.android.material.textfield.TextInputLayout进行充气时出错
原因:android.view.InflateException:二进制XML文件行#28:膨胀类com.google.android.material.textfield.TextInputLayout时出错
原因:java.lang.reflect.InvocationTargetException
位于java.lang.reflect.Constructor.newInstance0(本机方法)
位于java.lang.reflect.Constructor.newInstance(Constructor.java:430)
位于android.view.LayoutInflater.createView(LayoutInflater.java:645)
位于android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
位于android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
位于android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
位于android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
位于android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
位于android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
在android.view.LayoutInflater.inflate(LayoutInflater.java:518)
在android.view.LayoutInflater.充气(LayoutInflater.java:426)
在com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:92)
在com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:86)
在com.example.teorialearning.Activies.RegisterActivity.onCreate(RegisterActivity.java:19)上
位于android.app.Activity.performCreate(Activity.java:6679)
位于android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)上
位于android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
位于android.app.ActivityThread.-wrap12(ActivityThread.java)
在android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)上
位于android.os.Handler.dispatchMessage(Handler.java:102)
位于android.os.Looper.loop(Looper.java:154)
位于android.app.ActivityThread.main(ActivityThread.java:6119)
位于java.lang.reflect.Method.invoke(本机方法)
在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)上
位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
原因:java.lang.IllegalArgumentException:此组件要求您指定有效的TextAppearance属性。更新应用程序主题以从theme.MaterialComponents(或其后代)继承。
在com.google.android.material.internal.ThemeEnforcement.checkTextAppearance上(ThemeEnforcement.java:187)
在com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes上(ThemeEnforcement.java:118)
位于com.google.android.material.textfield.TextInputLayout.(TextInputLayout.java:463)
位于com.google.android.material.textfield.TextInputLayout.(TextInputLayout.java:422)
位于java.lang.reflect.Constructor.newInstance0(本机方法)
位于java.lang.reflect.Constructor.newInstance(Constructor.java:430)
位于android.view.LayoutInflater.createView(LayoutInflater.java:645)
位于android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
位于android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
位于android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
位于android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
位于android.view.LayoutInflater.rInflate(LayoutInflater.java:861)
位于android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
在android.view.LayoutInflater.inflate(LayoutInflater.java:518)
在android.view.LayoutInflater.充气(LayoutInflater.java:426)
在com.example.teorialearning.databinding.ActivityRegisterBinding.inflate(ActivityRegisterBinding.java:92)
在com.example.teorialearning.databinding.Activi上
<style name="Theme.TeoriaLearning" parent="Theme.MaterialComponents.Light.DarkActionBar">
app:backgroundTint="@color/YourColor"
<com.google.android.material.button.MaterialButton
style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
app:backgroundTint="@color/purple_700"
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
MaterialButton button = findViewById(R.id.button);
button.setBackgroundColor(ContextCompat.getColor(this,R.color.black));
style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MaterialButton button = findViewById(R.id.button);
int[][] states = new int[][]{
new int[]{android.R.attr.state_enabled}, // enabled
new int[]{-android.R.attr.state_enabled}, // disabled
new int[]{android.R.attr.state_pressed} // pressed
};
int[] colors = new int[]{
getColorRes(R.color.purple_700), // enabled color
getColorRes(R.color.purple_200), // disabled color
getColorRes(R.color.purple_500) // pressed color
};
button.setBackgroundTintList(new ColorStateList(states, colors));
}
private int getColorRes(@ColorRes int colorRes) {
return ContextCompat.getColor(this, colorRes);
}
buttonObject.setBackground(background);