我正在创建图片库壁纸应用程序，我正在尝试将图像设置为壁纸。
当我尝试将图像设置为墙纸时，我卡在图像加载消息中。
这是屏幕截图：它卡在这里：
t这是设置壁纸代码：
set_wallpaper.java
package com.td.gridview;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.WallpaperManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class Set_Wallpaper extends Activity {
private Uri mImageCaptureUri;
private ImageView mImageView;
private AlertDialog dialog;
private static final int PICK_FROM_CAMERA = 1;
private static final int CROP_FROM_CAMERA = 2;
private static final int PICK_FROM_FILE = 3;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.set_wallpaper);
// get intent data
Intent i = getIntent();
// Selected image id
int position = i.getExtras().getInt("id");
ImageView ing = (ImageView) findViewById(R.id.image_page);
ing.setImageResource(MainActivity.ICONS[position]);
doCrop();
}
private void doCrop() {
final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
/**
* Open image crop app by starting an intent
* ‘com.android.camera.action.CROP‘.
*/
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setType("image/*");
/**
* Check if there is image cropper app installed.
*/
List<ResolveInfo> list = getPackageManager().queryIntentActivities(
intent, 0);
int size = list.size();
/**
* If there is no image cropper app, display warning message
*/
if (size == 0) {
Toast.makeText(this, "Can not find image crop app",
Toast.LENGTH_SHORT).show();
return;
} else {
/**
* Specify the image path, crop dimension and scale
*/
intent.setData(mImageCaptureUri);
intent.putExtra("outputX", 200);
intent.putExtra("outputY", 200);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
/**
* There is posibility when more than one image cropper app exist,
* so we have to check for it first. If there is only one app, open
* then app.
*/
if (size == 1) {
Intent i = new Intent(intent);
ResolveInfo res = list.get(0);
i.setComponent(new ComponentName(res.activityInfo.packageName,
res.activityInfo.name));
startActivityForResult(i, CROP_FROM_CAMERA);
} else {
/**
* If there are several app exist, create a custom chooser to
* let user selects the app.
*/
for (ResolveInfo res : list) {
final CropOption co = new CropOption();
co.title = getPackageManager().getApplicationLabel(
res.activityInfo.applicationInfo);
co.icon = getPackageManager().getApplicationIcon(
res.activityInfo.applicationInfo);
co.appIntent = new Intent(intent);
co.appIntent
.setComponent(new ComponentName(
res.activityInfo.packageName,
res.activityInfo.name));
cropOptions.add(co);
}
CropOptionAdapter adapter = new CropOptionAdapter(
getApplicationContext(), cropOptions);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Choose Crop App");
builder.setAdapter(adapter,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
startActivityForResult(
cropOptions.get(item).appIntent,
CROP_FROM_CAMERA);
}
});
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (mImageCaptureUri != null) {
getContentResolver().delete(mImageCaptureUri, null,
null);
mImageCaptureUri = null;
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
}
public class CropOption {
public CharSequence title;
public Drawable icon;
public Intent appIntent;
}
public class CropOptionAdapter extends ArrayAdapter<CropOption> {
private ArrayList<CropOption> mOptions;
private LayoutInflater mInflater;
public CropOptionAdapter(Context context, ArrayList<CropOption> options) {
super(context, R.layout.set_wallpaper, options);
mOptions = options;
mInflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup group) {
if (convertView == null)
convertView = mInflater.inflate(R.layout.set_wallpaper, null);
CropOption item = mOptions.get(position);
if (item != null) {
((ImageView) convertView.findViewById(R.id.image_page))
.setImageDrawable(item.icon);
((TextView) convertView.findViewById(R.id.tv_name))
.setText(item.title);
return convertView;
}
return null;
}
}
}
以下是我在按钮单击时滑动图像并将当前显示图像发送到 set_wallpaper 类的代码
SwipeActivity.java
package com.td.gridview;
import java.io.IOException;
import android.app.Activity;
import android.app.WallpaperManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
public class SwipeActivity extends Activity {
protected int curruntPosition;
protected int hh;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.swipe_view);
// get intent data
Intent i = getIntent();
// Selected image id
final int position = i.getExtras().getInt("id");
final ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImagePagerAdapter adapter = new ImagePagerAdapter();
viewPager.setAdapter(adapter);
viewPager.setCurrentItem(position);
viewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
// Here you can set the wallpaper
curruntPosition = arg0;
if (curruntPosition == arg0) {
hh = 1;
}
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
//
Button bx = (Button) findViewById(R.id.xoom);
bx.setOnClickListener(new View.OnClickListener() {
public void onClick(View vx) {
// // TODO Auto-generated method stub
if (hh == 1) {
// Sending image id to FullScreenActivity
Intent i2 = new Intent(getApplicationContext(),
Full_Zoom.class);
// passing array index
i2.putExtra("id", curruntPosition);
startActivity(i2);
} else {
// get intent data
Intent i3 = getIntent();
// Selected image id
int position = i3.getExtras().getInt("id");
// Sending image id to FullScreenActivity
Intent i2 = new Intent(getApplicationContext(),
Full_Zoom.class);
// passing array index
i2.putExtra("id", position);
startActivity(i2);
}
}
});
//
// set wallpaper on button click
Button b1 = (Button) findViewById(R.id.wll);
b1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v2) {
// // TODO Auto-generated method stub
if (hh == 1) {
// Sending image id to FullScreenActivity
Intent i2 = new Intent(getApplicationContext(),
Set_Wallpaper.class);
// passing array index
i2.putExtra("id", curruntPosition);
startActivity(i2);
} else {
// get intent data
Intent i3 = getIntent();
// Selected image id
int position = i3.getExtras().getInt("id");
// Sending image id to FullScreenActivity
Intent i2 = new Intent(getApplicationContext(),
Set_Wallpaper.class);
// passing array index
i2.putExtra("id", position);
startActivity(i2);
}
}
});
}
public class ImagePagerAdapter extends PagerAdapter {
int[] icons = MainActivity.ICONS;
@Override
public int getCount() {
return icons.length;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((ImageView) object);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Context context = SwipeActivity.this;
ImageView imageView = new ImageView(context);
// int padding = context.getResources().getDimensionPixelSize(
// R.dimen.padding_large);
// imageView.setPadding(padding, padding, padding, padding);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
imageView.setImageResource(icons[position]);
((ViewPager) container).addView(imageView, 0);
return imageView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((ImageView) object);
}
}
}