public static final String CALCULATOR_PACKAGE ="com.android.calculator2";
public static final String CALCULATOR_CLASS ="com.android.calculator2.Calculator";
Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setComponent(new ComponentName(
CALCULATOR_PACKAGE,CALCULATOR_CLASS));
以上仅适用于HTC
public static final String CALCULATOR_PACKAGE ="com.sec.android.app.popupcalculator"; public static final String CALCULATOR_CLASS ="com.sec.android.app.popupcalculator.Calculator";
以上作品为S3
解决方法
您可以尝试所有Android设备上的默认计算器：
ArrayList<HashMap<String,Object>> items =new ArrayList<HashMap<String,Object>>();
final PackageManager pm = getPackageManager();
List<PackageInfo> packs = pm.getInstalledPackages(0);
for (PackageInfo pi : packs) {
if( pi.packageName.toString().toLowerCase().contains("calcul")){
HashMap<String,Object> map = new HashMap<String,Object>();
map.put("appName",pi.applicationInfo.loadLabel(pm));
map.put("packageName",pi.packageName);
items.add(map);
}
}
现在您可以启动计算器应用程序：
if(items.size()>=1){
String packageName = (String) items.get(0).get("packageName");
Intent i = pm.getLaunchIntentForPackage(packageName);
if (i != null)
startActivity(i);
}
else{
// Application not found
}
而对于Api> = 15,您可以使用
Intent intent = new Intent(); intent.setAction(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_APP_CALCULATOR); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent);
