Question

我的java文件为

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

public class ThemesActivity extends AppCompatActivity{
SharedPreferences sharedPreferences;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_themes);
}

@Override
protected void onStart() {
    super.onStart();
    setContentView(R.layout.activity_themes);
    sharedPreferences = getApplicationContext().
getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    int bg = sharedPreferences.getInt("background_resource",
 R.color.backYellow);
    getWindow().setBackgroundDrawableResource(bg);
}

public void yellowClick(View view){
    sharedPreferences = getApplicationContext().
getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt("background_resource", R.color.backYellow);
    editor.putInt("button_resource", R.color.buttonYellow);
    editor.apply();
    getWindow().setBackgroundDrawableResource(R.color.backYellow);
}

public void redClick(View view){
    sharedPreferences = getApplicationContext().
getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt("background_resource", R.color.backRed);
    editor.putInt("button_resource", R.color.buttonRed);
    editor.apply();
    getWindow().setBackgroundDrawableResource(R.color.backRed);
}

public void blueClick(View view){
    sharedPreferences =      getApplicationContext().
 getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt("background_resource", R.color.backBlue);
    editor.putInt("button_resource", R.color.buttonBlue);
    editor.apply();
    getWindow().setBackgroundDrawableResource(R.color.backBlue);
}

public void greenClick(View view){
    sharedPreferences = getApplicationContext().
 getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt("background_resource", R.color.backGreen);
    editor.putInt("button_resource", R.color.buttonGreen);
    editor.apply();
    getWindow().setBackgroundDrawableResource(R.color.backGreen);
}

}

资源文件为，

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/holo_orange_light"
android:gravity="center_horizontal"
android:orientation="vertical"
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.example.dhritiman.any.ThemesActivity">

<!-- Login progress -->


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:id="@+id/linearLayout2">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

        <Button
            android:id="@+id/blueButton"
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:layout_weight="1"
            android:background="@android:color/holo_blue_dark"
            android:onClick="blueClick"
            android:text="Blue"
            android:visibility="visible" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

        <Button
            android:id="@+id/yellowButton"
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:layout_weight="1"
            android:background="@android:color/holo_orange_dark"
            android:onClick="yellowClick"
            android:text="Yellow"
            android:visibility="visible" />
    </LinearLayout>

</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="horizontal"
    android:layout_below="@+id/linearLayout2"
    android:layout_alignParentStart="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

        <Button
            android:id="@+id/redButton"
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:layout_weight="1"
            android:background="@android:color/holo_red_dark"
            android:contextClickable="false"
            android:linksClickable="false"
            android:onClick="redClick"
            android:text="Red"
            android:visibility="visible" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

        <Button
            android:id="@+id/greenButton"
            android:layout_width="match_parent"
            android:layout_height="100dp"
            android:layout_weight="1"
            android:background="@android:color/holo_green_dark"
            android:onClick="greenClick"
            android:text="Green"
            android:visibility="visible" />
    </LinearLayout>

</LinearLayout>

</RelativeLayout>

请帮助，我的logcat显示进程指针0和进程指针1 我的意思是单击按钮时只进行触摸输入而不是按钮单击输入我检查了一切，但没有找到问题。提前致谢

Answer 1

确保在创建活动时调用的onCreate()内初始化视图和布局，当活动对用户可见时调用onStart()。

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_themes);
    // add here
    sharedPreferences = getApplicationContext().getSharedPreferences("MyNumbers", Context.MODE_PRIVATE);
    int bg = sharedPreferences.getInt("background_resource",R.color.backYellow);
    getWindow().setBackgroundDrawableResource(bg);
}

@Override
protected void onStart() {
    super.onStart();
    // move to onCreate
}

Answer 2

你的onclick可以正常工作只记录任何客户信息，但你只是在onCreate中初始化你的setContentView（R.layout.activity_themes），因为你的代码现在也工作但是init所有的视图组件应该在onCreate方法中初始化

谢谢！

无法点按按钮

2 个答案: