Java PackageManager.getDrawable方法代碼示例

import android.content.pm.PackageManager; //導入方法依賴的package包/類
/**
 * Gets the activity or application icon for an activity.
 *
 * @param component Name of an activity.
 * @return A drawable, or {@code null} if neither the acitivy or the application
 *         have an icon set.
 */
private Drawable getActivityIcon(ComponentName component) {
    PackageManager pm = mContext.getPackageManager();
    final ActivityInfo activityInfo;
    try {
        activityInfo = pm.getActivityInfo(component, PackageManager.GET_META_DATA);
    } catch (NameNotFoundException ex) {
        Log.w(LOG_TAG, ex.toString());
        return null;
    }
    int iconId = activityInfo.getIconResource();
    if (iconId == 0) return null;
    String pkg = component.getPackageName();
    Drawable drawable = pm.getDrawable(pkg, iconId, activityInfo.applicationInfo);
    if (drawable == null) {
        Log.w(LOG_TAG, "Invalid icon resource " + iconId + " for "
                + component.flattenToShortString());
        return null;
    }
    return drawable;
}
 

import android.content.pm.PackageManager; //導入方法依賴的package包/類
private Drawable getActivityIcon(ComponentName component) {
    PackageManager pm = this.mContext.getPackageManager();
    try {
        ActivityInfo activityInfo = pm.getActivityInfo(component, 128);
        int iconId = activityInfo.getIconResource();
        if (iconId == 0) {
            return null;
        }
        Drawable drawable = pm.getDrawable(component.getPackageName(), iconId, activityInfo.applicationInfo);
        if (drawable != null) {
            return drawable;
        }
        Log.w(LOG_TAG, "Invalid icon resource " + iconId + " for " + component.flattenToShortString());
        return null;
    } catch (NameNotFoundException ex) {
        Log.w(LOG_TAG, ex.toString());
        return null;
    }
}
 

import android.content.pm.PackageManager; //導入方法依賴的package包/類
public static Drawable loadPackageIcon(Context context, String authority, int icon) {
    if (icon != 0) {
        if (authority != null) {
            final PackageManager pm = context.getPackageManager();
            final ProviderInfo info = pm.resolveContentProvider(authority, 0);
            if (info != null) {
                return pm.getDrawable(info.packageName, icon, info.applicationInfo);
            }
        } else {
            return ContextCompat.getDrawable(context, icon);
        }
    }
    return null;
}
 

import android.content.pm.PackageManager; //導入方法依賴的package包/類
/**
 * @param name The name of the account. This is usually the user's email address or
 *        username.
 * @param description The description for this account. This will be dictated by the
 *        type of account returned, and can be obtained from the system AccountManager.
 */
public AccountData(String name, AuthenticatorDescription description) {
    mName = name;
    if (description != null) {
        mType = description.type;

        // The type string is stored in a resource, so we need to convert it into something
        // human readable.
        String packageName = description.packageName;
        PackageManager pm = getPackageManager();

        if (description.labelId != 0) {
            mTypeLabel = pm.getText(packageName, description.labelId, null);
            if (mTypeLabel == null) {
                throw new IllegalArgumentException("LabelID provided, but label not found");
            }
        } else {
            mTypeLabel = "";
        }

        if (description.iconId != 0) {
            mIcon = pm.getDrawable(packageName, description.iconId, null);
            if (mIcon == null) {
                throw new IllegalArgumentException("IconID provided, but drawable not " +
                        "found");
            }
        } else {
            mIcon = getResources().getDrawable(android.R.drawable.sym_def_app_icon);
        }
    }
}
 

import android.content.pm.PackageManager; //導入方法依賴的package包/類
/**
 * Load icon
 *
 * @param packageManager package manager
 * @param packageName    package name
 * @param iconId         icon id
 * @return drawable
 */
static public Drawable loadIcon(@NonNull final PackageManager packageManager, final String packageName, final int iconId)
{
	if (iconId != 0)
	{
		return packageManager.getDrawable(packageName, iconId, null);
	}
	return packageManager.getDefaultActivityIcon();
}