@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home: //為up butoon的id
onBackPressed();
return true;
}
return super.onOptionsItemSelected(item);
}
Object instance = new SomeClass();
instance.getClass().getName(); //will return the name (as String) (== "SomeClass")
instance.getClass(); //will return the SomeClass' Class objectCalendar c = Calendar.getInstance();
c.set(Calendar.MONTH, Calendar.MARCH);
c.set(Calendar.DAY_OF_MONTH, 3);
long time2= c.getTimeInMillis();
c.set(Calendar.MONTH, Calendar.AUGUST);
c.set(Calendar.DAY_OF_MONTH, 8);
long time3= c.getTimeInMillis();
if(time>time2){
//Logic
if(time>time3){
//Logic
}
}<TextView< android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/content"> </TextView>
text.setText(getString(R.string.content));
this.getString(R.string.content);
context.getString(R.string.content); application.getString(R.string.content);
mytextview.setText(Html.fromHtml("<h1>♥zcbbupt</h1>• <b>foo</b><br/> • bar<br/> • baz<br/>"));
brpdivembstrongcitedfnibigsmallfontblockquotettmonospaceausupsubmytextview.setText(Html.fromHtml("•item1<br> •item2<br>"));
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(mContext, org.gpsagenda.DetailsContainer.class);
intent.putExtra("id", item.ID());
mContext.startActivity(intent);
}int id = getIntent().getExtras().getInt("id");Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
startActivity(intent);Intent intent = new Intent(Intent.ACTION_DELETE, Uri.fromParts("package",
getPackageManager().getPackageArchiveInfo(apkUri.getPath(), 0).packageName,null));
startActivity(intent);class PackageDeleteObserver extends IPackageDeleteObserver.Stub {
public void packageDeleted(String packageName, int returnCode) {
Log.i("service", "uninstall packageDeleted callback!!!");
if(returnCode!=1)
//returnCode不等於一，代表刪除失敗
else
//returnCode等於一代表刪除成功
private void uninstallapp(){
PackageDeleteObserver observer = new PackageDeleteObserver();
PackageManager pm = this.getApplicationContext().getPackageManager();
pm.deletePackage(packagename, observer, 0);
}
Manifest.xml要加以下權限
uses-permission android:name="android.permission.INSTALL_PACKAGES" uses-permission android:name="android.permission.DELETE_PACKAGES"
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