ResourceUtil.java

package com.tws.plugin.util;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import tws.component.log.TwsLog;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;

import com.tws.plugin.content.PluginDescriptor;
import com.tws.plugin.core.PluginLoader;

/**
 * @author yongchen
 */
public class ResourceUtil {

	private static final String TAG = "rick_Print:ResourceUtil";

	public static String getString(String value, Context pluginContext) {
		String idHex = null;
		if (value != null && value.startsWith("@") && value.length() == 9) {
			idHex = value.replace("@", "");

		} else if (value != null && value.startsWith("@android:") && value.length() == 17) {
			idHex = value.replace("@android:", "");
		}

		if (idHex != null) {
			try {
				int id = Integer.parseInt(idHex, 16);
				// 此时context可能还没有初始化
				if (pluginContext != null) {
					String des = pluginContext.getString(id);
					return des;
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}

		return value;
	}

	public static Boolean getBoolean(String value, Context pluginContext) {
		String idHex = null;
		if (value != null && value.startsWith("@") && value.length() == 9) {
			idHex = value.replace("@", "");

		} else if (value != null && value.startsWith("@android:") && value.length() == 17) {
			idHex = value.replace("@android:", "");
		}

		if (idHex != null) {
			try {
				int id = Integer.parseInt(idHex, 16);
				// 此时context可能还没有初始化
				if (pluginContext != null) {
					return pluginContext.getResources().getBoolean(id);
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		} else if (value != null) {
			return Boolean.parseBoolean(value);
		}

		return null;
	}

	public static int getResourceId(String value) {
		String idHex = null;
		if (value != null && value.startsWith("@") && value.length() == 9) {
			idHex = value.replace("@", "");

		} else if (value != null && value.startsWith("@android:") && value.length() == 17) {
			idHex = value.replace("@android:", "");
		}
		if (idHex != null) {
			try {
				int id = Integer.parseInt(idHex, 16);
				return id;
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		return 0;
	}

	public static String getLabel(PluginDescriptor pluginDescriptor) {
		PackageManager pm = PluginLoader.getApplication().getPackageManager();
		PackageInfo info = pm.getPackageArchiveInfo(pluginDescriptor.getInstalledPath(), PackageManager.GET_ACTIVITIES);
		if (info != null) {
			ApplicationInfo appInfo = info.applicationInfo;
			appInfo.sourceDir = pluginDescriptor.getInstalledPath();
			appInfo.publicSourceDir = pluginDescriptor.getInstalledPath();
			String label = null;
			try {
				if (!isMainResId(appInfo.labelRes)) {//pluginDescriptor.isStandalone() ||
					label = pm.getApplicationLabel(appInfo).toString();
				}
			} catch (Resources.NotFoundException e) {
			}
			if (label == null || label.equals(pluginDescriptor.getPackageName())) {
				// 可能设置的lable是来自宿主的资源
				if (pluginDescriptor.getDescription() != null) {
					int id = ResourceUtil.getResourceId(pluginDescriptor.getDescription());
					if (id != 0) {
						// 再宿主中查一次
						try {
							label = PluginLoader.getApplication().getResources().getString(id);
						} catch (Resources.NotFoundException e) {
						}
					}
				}
			}
			if (label != null) {
				return label;
			}
		}
		return pluginDescriptor.getDescription();
	}

	public static Bundle getApplicationMetaData(String apkPath) {
		// 暂时只查询Applicatoin节点下的meta信息，其他组件节点下的meta先不管
		PackageInfo info = PluginLoader.getApplication().getPackageManager()
				.getPackageArchiveInfo(apkPath, PackageManager.GET_META_DATA);
		if (info != null && info.applicationInfo != null) {
			return info.applicationInfo.metaData;
		}
		return null;
	}

	public static Drawable getLogo(PluginDescriptor pd) {
		if (Build.VERSION.SDK_INT >= 9) {
			PackageManager pm = PluginLoader.getApplication().getPackageManager();
			PackageInfo info = pm.getPackageArchiveInfo(pd.getInstalledPath(), PackageManager.GET_ACTIVITIES);
			if (info != null) {
				ApplicationInfo appInfo = info.applicationInfo;
				appInfo.sourceDir = pd.getInstalledPath();
				appInfo.publicSourceDir = pd.getInstalledPath();
				Drawable logo = pm.getApplicationLogo(appInfo);
				return logo;
			}
		}
		return null;
	}

	public static Drawable getIcon(PluginDescriptor pd) {
		if (Build.VERSION.SDK_INT >= 9) {
			PackageManager pm = PluginLoader.getApplication().getPackageManager();
			PackageInfo info = pm.getPackageArchiveInfo(pd.getInstalledPath(), PackageManager.GET_ACTIVITIES);
			if (info != null) {
				ApplicationInfo appInfo = info.applicationInfo;
				appInfo.sourceDir = pd.getInstalledPath();
				appInfo.publicSourceDir = pd.getInstalledPath();
				Drawable logo = pm.getApplicationIcon(appInfo);
				return logo;
			}
		}
		return null;
	}

	public static boolean isMainResId(int resid) {
		final int pidAndEid = resid >> 16;
		final int packageId = pidAndEid >> 8;
		boolean isMainResId = (packageId == 0x7f && pidAndEid < 0x7f10);
		TwsLog.d(TAG, "call isMainResId:0x" + Integer.toHexString(resid) + " rlt is " + isMainResId);
		// 这里之所以这样判断是因为 宿主的public.xml中限制了宿主的资源id范围
		// 如果public.xml配置在插件中, 这里需要将这个判断反过来
		return isMainResId;
	}

	public static void rewriteRValues(ClassLoader cl, String packageName, int id) {
		final Class<?> rClazz;
		try {
			rClazz = cl.loadClass(packageName + ".R");
		} catch (ClassNotFoundException e) {
			TwsLog.d(TAG, "No resource references to update in package " + packageName);
			return;
		}

		final Method callback;
		try {
			callback = rClazz.getMethod("onResourcesLoaded", int.class);
		} catch (NoSuchMethodException e) {
			// No rewriting to be done.
			return;
		}

		Throwable cause;
		try {
			callback.invoke(null, id);
			return;
		} catch (IllegalAccessException e) {
			cause = e;
		} catch (InvocationTargetException e) {
			cause = e.getCause();
		}

		throw new RuntimeException("Failed to rewrite resource references for " + packageName, cause);
	}
}