我正在尝试制作半透明布局但不起作用,有人可以帮我这个吗?
这是我的清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.vratsasoftware.tito.texteditor">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Text" />
<activity
android:name=".InfoActivity"
android:theme="@android:style/Theme.Translucent"/>
</application>
</manifest>
这是我的活动布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.vratsasoftware.tito.texteditor.InfoActivity"
android:background="#50ffffff">
<RelativeLayout
android:id="@+id/relativeLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_gravity="center"
android:layout_marginTop="85dp">
<TextView
android:id="@+id/textView_title"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_gravity="center"
android:background="@android:color/darker_gray"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#ffffff" />
<TextView
android:id="@+id/definition"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/textView_title"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="@+id/textView_title"
android:layout_below="@+id/textView_title"
android:layout_marginTop="2dp"
android:background="@android:color/darker_gray"
android:text="Definition:"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="@android:color/white" />
<TextView
android:id="@+id/textView_definition"
android:layout_width="wrap_content"
android:layout_height="150dp"
android:layout_alignEnd="@+id/definition"
android:layout_alignLeft="@+id/definition"
android:layout_alignRight="@+id/definition"
android:layout_alignStart="@+id/definition"
android:layout_below="@+id/definition"
android:layout_marginBottom="2dp"
android:allowUndo="true"
android:background="@android:color/darker_gray"
android:text="New Text"
android:textColor="#ffffff" />
<Button
android:id="@+id/button_change"
style="?android:attr/borderlessButtonStyle"
android:layout_width="60dp"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/textView_definition"
android:layout_alignRight="@+id/textView_definition"
android:layout_below="@+id/textView_definition"
android:layout_gravity="right"
android:layout_marginLeft="2dp"
android:allowUndo="true"
android:background="@android:color/darker_gray"
android:foreground="@drawable/ic_action" />
<EditText
android:id="@+id/editText_replace"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/button_change"
android:layout_alignLeft="@+id/textView_definition"
android:layout_alignStart="@+id/textView_definition"
android:layout_below="@+id/textView_definition"
android:layout_toLeftOf="@+id/button_change"
android:layout_toStartOf="@+id/button_change"
android:background="@android:color/darker_gray"
android:hint="Enter word for replace"
android:textColor="#ffffff"
android:textColorHint="#ffffff" />
<Button
android:id="@+id/button_cancel"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="@+id/button_change"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="@+id/button_change"
android:layout_below="@+id/button_change"
android:layout_marginTop="2dp"
android:background="@android:color/darker_gray"
android:foreground="@android:drawable/ic_delete"
android:foregroundGravity="center_horizontal" />
</RelativeLayout>
</RelativeLayout>
启动活动后,它停止,这是错误:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.vratsasoftware.tito.texteditor/com.vratsasoftware.tito.texteditor.InfoActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
答案 0 :(得分:2)
更改您的清单文件:
更改以下行
<activity
android:name=".InfoActivity"
android:theme="@android:style/Theme.Translucent"/>
TO:
<activity
android:name=".InfoActivity"
android:theme="@style/Base.TextAppearance.AppCompat"/>
答案 1 :(得分:-1)
我希望这会对你有所帮助 在java代码中获取所需布局的id 然后将布局的不透明度设置为较小的数字