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我正在尝试制作一个设置用户壁纸的应用程序,但每次单击“设置壁纸”按钮时它都会崩溃。我正在使用 640X360px 的图像,每个图像 100-200kb

我的代码是:

    package basics.noaml.com.basics;

import android.app.Activity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;

/**
 * Created by Noam on 29/11/2014.
 */
public class TutorialThree extends Activity implements View.OnClickListener {

    ImageView display;
    int current;

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

        actions();
    }

    public void actions(){

        current = R.id.IVimage1;

        display = (ImageView) findViewById(R.id.IVdisplay);
        ImageView image1 = (ImageView) findViewById(R.id.IVimage1);
        ImageView image2 = (ImageView) findViewById(R.id.IVimage2);
        ImageView image3 = (ImageView) findViewById(R.id.IVimage3);
        ImageView image4 = (ImageView) findViewById(R.id.IVimage4);
        ImageView image5 = (ImageView) findViewById(R.id.IVimage5);
        ImageView image6 = (ImageView) findViewById(R.id.IVimage6);
        ImageView image7 = (ImageView) findViewById(R.id.IVimage7);
        Button setWall = (Button) findViewById(R.id.bSetWallpaper);

        image1.setOnClickListener(this);
        image2.setOnClickListener(this);
        image3.setOnClickListener(this);
        image4.setOnClickListener(this);
        image5.setOnClickListener(this);
        image6.setOnClickListener(this);
        image7.setOnClickListener(this);
        setWall.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()){

            case R.id.IVimage1:
                display.setImageResource(R.drawable.bg_1);
                current = R.id.IVimage1;
                break;

            case R.id.IVimage2:
                display.setImageResource(R.drawable.bg_2);
                current = R.id.IVimage2;
                break;

            case R.id.IVimage3:
                display.setImageResource(R.drawable.bg_3);
                current = R.id.IVimage3;
                break;

            case R.id.IVimage4:
                display.setImageResource(R.drawable.bg_4);
                current = R.id.IVimage4;
                break;

            case R.id.IVimage5:
                display.setImageResource(R.drawable.bg_5);
                current = R.id.IVimage5;
                break;

            case R.id.IVimage6:
                display.setImageResource(R.drawable.bg_6);
                current = R.id.IVimage6;
                break;

            case R.id.IVimage7:
                display.setImageResource(R.drawable.bg_7);
                current = R.id.IVimage7;
                break;

            case R.id.bSetWallpaper:
                InputStream yeaaaa = getResources().openRawResource(current);
                Bitmap wallpaper = BitmapFactory.decodeStream(yeaaaa);

                WallpaperManager myWallpaperManager=WallpaperManager.getInstance(getApplicationContext());

                try {
                    myWallpaperManager.setBitmap(wallpaper);
                }
                catch (IOException e) {
                    Toast.makeText(TutorialThree.this, "Ooops, couldn't set the wallpaper", Toast.LENGTH_LONG).show();
                }

                break;

        }

    }
}

和布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/IVdisplay"
        android:layout_width="300dp"
        android:layout_height="169dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="30dp"
        android:src="@drawable/bg_1" />

    <Button
        android:id="@+id/bSetWallpaper"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:text="Set Image To Background" />


    <HorizontalScrollView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:orientation="horizontal">

            <ImageView
                android:id="@+id/IVimage1"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_1"/>

            <ImageView
                android:id="@+id/IVimage2"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_2" />

            <ImageView
                android:id="@+id/IVimage3"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_3" />

            <ImageView
                android:id="@+id/IVimage4"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_4" />

            <ImageView
                android:id="@+id/IVimage5"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_5" />

            <ImageView
                android:id="@+id/IVimage6"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_6" />

            <ImageView
                android:id="@+id/IVimage7"
                android:layout_width="110dp"
                android:layout_height="66dp"
                android:padding="5dp"
                android:src="@drawable/bg_7" />

        </LinearLayout>
    </HorizontalScrollView>


</LinearLayout>

日志猫:

12-04 20:38:53.776  12776-12776/basics.noaml.com.basics V/Zygote﹕ Switching descriptor 59 to /dev/null
12-04 20:38:53.776  12776-12776/basics.noaml.com.basics V/Zygote﹕ Switching descriptor 10 to /dev/null
12-04 20:38:53.776  12776-12776/basics.noaml.com.basics D/dalvikvm﹕ Late-enabling CheckJNI
12-04 20:38:53.916  12776-12776/basics.noaml.com.basics D/ActivityThread﹕ handleBindApplication:basics.noaml.com.basics
12-04 20:38:53.916  12776-12776/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapUtilization:0.75
12-04 20:38:53.916  12776-12776/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapMinFree:524288
12-04 20:38:53.966  12776-12776/basics.noaml.com.basics I/dalvikvm﹕ DexOpt: illegal method access (call Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V from Landroid/content/res/XResources$XTypedArray;)
12-04 20:38:53.966  12776-12776/basics.noaml.com.basics I/dalvikvm﹕ Could not find method android.content.res.TypedArray.<init>, referenced from method android.content.res.XResources$XTypedArray.<init>
12-04 20:38:53.966  12776-12776/basics.noaml.com.basics W/dalvikvm﹕ VFY: unable to resolve direct method 82: Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V
12-04 20:38:53.966  12776-12776/basics.noaml.com.basics D/dalvikvm﹕ VFY: replacing opcode 0x70 at 0x0002
12-04 20:38:54.136  12776-12776/basics.noaml.com.basics E/MediaPlayer﹕ Should have subtitle controller already set
12-04 20:38:54.166  12776-12776/basics.noaml.com.basics I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:320>: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
12-04 20:38:54.186  12776-12776/basics.noaml.com.basics D/OpenGLRenderer﹕ Enabling debug mode 0
12-04 20:38:54.206  12776-12776/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:38:54.266  12776-12776/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41de9ea8 time:1381137
12-04 20:38:55.176  12776-12776/basics.noaml.com.basics D/dalvikvm﹕ JIT code cache reset in 0 ms (4096 bytes 4/0)
12-04 20:38:55.356  12776-12776/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@4259c638 time:1382223
12-04 20:38:57.166  12776-12776/basics.noaml.com.basics E/ActivityThread﹕ Performing stop of activity that is not resumed: {basics.noaml.com.basics/basics.noaml.com.basics.menu}
    java.lang.RuntimeException: Performing stop of activity that is not resumed: {basics.noaml.com.basics/basics.noaml.com.basics.menu}
            at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3164)
            at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3251)
            at android.app.ActivityThread.access$1100(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1232)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5139)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
            at dalvik.system.NativeStart.main(Native Method)
12-04 20:39:28.176  12776-12776/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@4259c638 time:1415041
12-04 20:39:30.926  12776-12776/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:39:31.556  12776-12776/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:39:31.686  12776-12776/basics.noaml.com.basics E/MediaPlayer﹕ Should have subtitle controller already set
12-04 20:39:32.236  12776-12776/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41dfc710 time:1419108
12-04 20:39:32.976  12776-12776/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:39:33.546  12776-12776/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:39:33.576  12776-12776/basics.noaml.com.basics D/AndroidRuntime﹕ Shutting down VM
12-04 20:39:33.576  12776-12776/basics.noaml.com.basics W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x415fbce0)
12-04 20:39:33.586  12776-12776/basics.noaml.com.basics E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: basics.noaml.com.basics, PID: 12776
    java.lang.NullPointerException
            at android.content.res.Resources.openRawResource(Resources.java:1085)
            at android.content.res.Resources.openRawResource(Resources.java:1056)
            at basics.noaml.com.basics.TutorialThree.onClick(TutorialThree.java:97)
            at android.view.View.performClick(View.java:4445)
            at android.view.View$PerformClick.run(View.java:18446)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5139)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
            at dalvik.system.NativeStart.main(Native Method)
12-04 20:39:35.626  12776-12776/basics.noaml.com.basics I/Process﹕ Sending signal. PID: 12776 SIG: 9
12-04 20:39:35.806  13778-13778/basics.noaml.com.basics D/ActivityThread﹕ handleBindApplication:basics.noaml.com.basics
12-04 20:39:35.806  13778-13778/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapUtilization:0.75
12-04 20:39:35.806  13778-13778/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapMinFree:524288
12-04 20:39:35.816  13778-13778/basics.noaml.com.basics I/dalvikvm﹕ DexOpt: illegal method access (call Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V from Landroid/content/res/XResources$XTypedArray;)
12-04 20:39:35.816  13778-13778/basics.noaml.com.basics I/dalvikvm﹕ Could not find method android.content.res.TypedArray.<init>, referenced from method android.content.res.XResources$XTypedArray.<init>
12-04 20:39:35.816  13778-13778/basics.noaml.com.basics W/dalvikvm﹕ VFY: unable to resolve direct method 82: Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V
12-04 20:39:35.816  13778-13778/basics.noaml.com.basics D/dalvikvm﹕ VFY: replacing opcode 0x70 at 0x0002
12-04 20:39:35.916  13778-13778/basics.noaml.com.basics I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:320>: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
12-04 20:39:35.926  13778-13778/basics.noaml.com.basics D/OpenGLRenderer﹕ Enabling debug mode 0
12-04 20:39:35.976  13778-13778/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41deb0e0 time:1422847
12-04 20:41:40.391  13778-13778/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41deb0e0 time:1547235
12-04 20:41:41.551  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:41.691  13778-13778/basics.noaml.com.basics E/MediaPlayer﹕ Should have subtitle controller already set
12-04 20:41:41.761  13778-13778/basics.noaml.com.basics D/dalvikvm﹕ JIT code cache reset in 0 ms (4096 bytes 4/0)
12-04 20:41:41.771  13778-13789/basics.noaml.com.basics W/MediaPlayer-JNI﹕ MediaPlayer finalized without being released
12-04 20:41:42.361  13778-13778/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@42425358 time:1549209
12-04 20:41:43.001  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:43.471  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:43.711  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:44.641  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:45.091  13778-13778/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 20:41:45.181  13778-13778/basics.noaml.com.basics D/AndroidRuntime﹕ Shutting down VM
12-04 20:41:45.191  13778-13778/basics.noaml.com.basics W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x415fbce0)
12-04 20:41:45.191  13778-13778/basics.noaml.com.basics E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: basics.noaml.com.basics, PID: 13778
    java.lang.NullPointerException
            at android.content.res.Resources.openRawResource(Resources.java:1085)
            at android.content.res.Resources.openRawResource(Resources.java:1056)
            at basics.noaml.com.basics.TutorialThree.onClick(TutorialThree.java:97)
            at android.view.View.performClick(View.java:4445)
            at android.view.View$PerformClick.run(View.java:18446)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5139)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
            at dalvik.system.NativeStart.main(Native Method)
12-04 20:41:46.511  14049-14049/basics.noaml.com.basics D/ActivityThread﹕ handleBindApplication:basics.noaml.com.basics
12-04 20:41:46.511  14049-14049/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapUtilization:0.75
12-04 20:41:46.511  14049-14049/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapMinFree:524288
12-04 20:41:46.531  14049-14049/basics.noaml.com.basics I/dalvikvm﹕ DexOpt: illegal method access (call Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V from Landroid/content/res/XResources$XTypedArray;)
12-04 20:41:46.531  14049-14049/basics.noaml.com.basics I/dalvikvm﹕ Could not find method android.content.res.TypedArray.<init>, referenced from method android.content.res.XResources$XTypedArray.<init>
12-04 20:41:46.531  14049-14049/basics.noaml.com.basics W/dalvikvm﹕ VFY: unable to resolve direct method 82: Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V
12-04 20:41:46.531  14049-14049/basics.noaml.com.basics D/dalvikvm﹕ VFY: replacing opcode 0x70 at 0x0002
12-04 20:41:46.641  14049-14049/basics.noaml.com.basics I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:320>: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
12-04 20:41:46.661  14049-14049/basics.noaml.com.basics D/OpenGLRenderer﹕ Enabling debug mode 0
12-04 20:41:46.711  14049-14049/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41de76f8 time:1553553
12-04 20:41:53.021  14049-14049/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41de76f8 time:1559863
12-04 21:15:03.174  18325-18325/basics.noaml.com.basics V/Zygote﹕ Switching descriptor 59 to /dev/null
12-04 21:15:03.174  18325-18325/basics.noaml.com.basics V/Zygote﹕ Switching descriptor 10 to /dev/null
12-04 21:15:03.184  18325-18325/basics.noaml.com.basics D/dalvikvm﹕ Late-enabling CheckJNI
12-04 21:15:03.304  18325-18325/basics.noaml.com.basics D/ActivityThread﹕ handleBindApplication:basics.noaml.com.basics
12-04 21:15:03.304  18325-18325/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapUtilization:0.75
12-04 21:15:03.304  18325-18325/basics.noaml.com.basics D/ActivityThread﹕ setTargetHeapMinFree:524288
12-04 21:15:03.324  18325-18325/basics.noaml.com.basics I/dalvikvm﹕ DexOpt: illegal method access (call Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V from Landroid/content/res/XResources$XTypedArray;)
12-04 21:15:03.324  18325-18325/basics.noaml.com.basics I/dalvikvm﹕ Could not find method android.content.res.TypedArray.<init>, referenced from method android.content.res.XResources$XTypedArray.<init>
12-04 21:15:03.324  18325-18325/basics.noaml.com.basics W/dalvikvm﹕ VFY: unable to resolve direct method 82: Landroid/content/res/TypedArray;.<init> (Landroid/content/res/Resources;[I[II)V
12-04 21:15:03.324  18325-18325/basics.noaml.com.basics D/dalvikvm﹕ VFY: replacing opcode 0x70 at 0x0002
12-04 21:15:03.474  18325-18325/basics.noaml.com.basics E/MediaPlayer﹕ Should have subtitle controller already set
12-04 21:15:03.504  18325-18325/basics.noaml.com.basics I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:320>: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
12-04 21:15:03.534  18325-18325/basics.noaml.com.basics D/OpenGLRenderer﹕ Enabling debug mode 0
12-04 21:15:03.604  18325-18325/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41deaae0 time:2663065
12-04 21:15:04.534  18325-18325/basics.noaml.com.basics D/dalvikvm﹕ JIT code cache reset in 0 ms (4096 bytes 4/0)
12-04 21:15:04.714  18325-18325/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@4259b380 time:2664178
12-04 21:15:09.634  18325-18325/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 21:15:09.754  18325-18325/basics.noaml.com.basics E/MediaPlayer﹕ Should have subtitle controller already set
12-04 21:15:10.474  18325-18325/basics.noaml.com.basics I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@41e5fe18 time:2669939
12-04 21:15:11.364  18325-18325/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 21:15:12.734  18325-18325/basics.noaml.com.basics I/Xposed﹕ xxxxxx
12-04 21:15:12.804  18325-18325/basics.noaml.com.basics D/AndroidRuntime﹕ Shutting down VM
12-04 21:15:12.804  18325-18325/basics.noaml.com.basics W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x415fbce0)
12-04 21:15:12.804  18325-18325/basics.noaml.com.basics E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: basics.noaml.com.basics, PID: 18325
    java.lang.NullPointerException
            at android.content.res.Resources.openRawResource(Resources.java:1085)
            at android.content.res.Resources.openRawResource(Resources.java:1056)
            at basics.noaml.com.basics.TutorialThree.onClick(TutorialThree.java:97)
            at android.view.View.performClick(View.java:4445)
            at android.view.View$PerformClick.run(View.java:18446)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5139)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
            at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
            at dalvik.system.NativeStart.main(Native Method)
4

2 回答 2

0

getResources()是的一部分Context。你可以像这样在 an 中使用它,Activity因为它继承自Context. 您需要传入 Activity 的 Context 才能使用getResources.

于 2014-12-04T19:04:32.540 回答
0

您将 imageView 的 id 存储当前变量中:

current = R.id.IVimage1;

但是您需要将可绘制的 id 存储为:

current = R.drawable.bg_1;

那将解决它。

不要忘记在清单中您需要添加以下权限:

<uses-permission android:name="android.permission.SET_WALLPAPER"/>
于 2014-12-05T17:27:59.253 回答