直接从数据库里修改桌面图标

1、定义bean对象。
public class Shortcut {
public final long id;
public final String title;
public final String intent;
public final String iconResource;

public Shortcut(long id, String title, String intent, String iconResource) {
this.id = id;
this.title = title;
this.intent = intent;
this.iconResource = iconResource;
}

public long getId() {
return id;
}
public String getTitle() {
return title;
}
public String getIntent() {
return intent;
}
public String getIconResource() {
return iconResource;
}

public String toString() {
return "id:" + id + ",title:" + title + ",intent:" + intent + ",icon:" + iconResource;
}
}

2、定义dao类。
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
public class ShortcutDao {
private ContentResolver contentResolver;
private Uri uri = Uri.parse("content://com.android.launcher.settings/favorites?notify=true");
private String[] columns = new String[]{"_id", "title", "intent", "iconResource"};

public ShortcutDao(ContentResolver contentResolver){
this.contentResolver = contentResolver;
}

public Shortcut getShortcut(String appName, String intent){
     String whereQuery = "title=? and intent like ?";
     String[] whereParams = new String[]{appName, "%"+intent+"%"};
     Cursor c = contentResolver.query(uri, columns, whereQuery, whereParams, null);

     try {
      c.moveToFirst();
            if (c.isAfterLast()){
                return null;
            }else{
             return new Shortcut(c.getLong(0), c.getString(1), c.getString(2), c.getString(3));
            }
        } finally {
         c.close();
        }
    }
    public void updateShortcut(long id, String icon){
     ContentValues values = new ContentValues();
        values.put("iconResource", icon);
        contentResolver.update(uri, values, "_id=?", new String[]{String.valueOf(id)});
    }

    public void updateShortcut(long id, String icon, String iconPackage){
     ContentValues values = new ContentValues();
        values.put("iconResource", icon);
        values.put("iconPackage", iconPackage);
        values.put("itemType", 1);
        contentResolver.update(uri, values, "_id=?", new String[]{String.valueOf(id)});
    }
}

3、添加下面这些权限。

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