如何打开**android中的SD卡文件**”;如果我点击该文件,它必须在emulator中打开?
如何在android中打开“SD卡文件”,如果我单击该文件,它必须在emulator中打开?请查看以下代码- 扩展ListActivity如何打开**android中的SD卡文件**”;如果我点击该文件,它必须在emulator中打开?,android,pdf,Android,Pdf,如何在android中打开“SD卡文件”,如果我单击该文件,它必须在emulator中打开?请查看以下代码- 扩展ListActivity ArrayAdapter<String> adapter; int clickCounter=0; ArrayList<String> listItems=new ArrayList<String>(); private File[] imagelist; String[] pdflist;
ArrayAdapter<String> adapter;
int clickCounter=0;
ArrayList<String> listItems=new ArrayList<String>();
private File[] imagelist;
String[] pdflist;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File images = Environment.getExternalStorageDirectory();
imagelist = images.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name)
{
return ((name.endsWith(".pdf")));
}
});
pdflist = new String[imagelist.length];
for(int i = 0;i<imagelist.length;i++)
{
pdflist[i] = imagelist[i].getName();
}
this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, pdflist));
}
@SuppressWarnings("rawtypes")
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
PackageManager packageManager = getPackageManager();
Intent testIntent = new Intent(Intent.ACTION_VIEW);
testIntent.setType("application/pdf");
List list = packageManager.queryIntentActivities(testIntent, PackageManager.MATCH_DEFAULT_ONLY);
if (list.size() > 0 && imagelist[(int) id].isFile()) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(imagelist[(int) id].getAbsoluteFile());
intent.setDataAndType(uri, "application/pdf");
startActivity(intent);
}
}
阵列适配器;
int clickCounter=0;
ArrayList listItems=新的ArrayList();
私有文件[]图像列表;
字符串[]pdflist;
/**在首次创建活动时调用*/
@凌驾
创建时的公共void(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
文件images=Environment.getExternalStorageDirectory();
imagelist=images.listFiles(新文件名筛选器(){
公共布尔接受(文件目录,字符串名称)
{
返回((name.endsWith(.pdf));
}
});
pdflist=新字符串[imagelist.length];
对于(int i=0;i 0&&imagelist[(int)id].isFile()){
意图=新意图();
intent.setAction(intent.ACTION\u视图);
Uri=Uri.fromFile(imagelist[(int)id].getAbsoluteFile());
setDataAndType(uri,“应用程序/pdf”);
星触觉(意向);
}
}
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView android:id="@+android:id/list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:drawSelectorOnTop="false" />
</LinearLayout>
查看此代码-
扩展ListActivity
ArrayAdapter<String> adapter;
int clickCounter=0;
ArrayList<String> listItems=new ArrayList<String>();
private File[] imagelist;
String[] pdflist;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File images = Environment.getExternalStorageDirectory();
imagelist = images.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name)
{
return ((name.endsWith(".pdf")));
}
});
pdflist = new String[imagelist.length];
for(int i = 0;i<imagelist.length;i++)
{
pdflist[i] = imagelist[i].getName();
}
this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, pdflist));
}
@SuppressWarnings("rawtypes")
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
PackageManager packageManager = getPackageManager();
Intent testIntent = new Intent(Intent.ACTION_VIEW);
testIntent.setType("application/pdf");
List list = packageManager.queryIntentActivities(testIntent, PackageManager.MATCH_DEFAULT_ONLY);
if (list.size() > 0 && imagelist[(int) id].isFile()) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(imagelist[(int) id].getAbsoluteFile());
intent.setDataAndType(uri, "application/pdf");
startActivity(intent);
}
}
阵列适配器;
int clickCounter=0;
ArrayList listItems=新的ArrayList();
私有文件[]图像列表;
字符串[]pdflist;
/**在首次创建活动时调用*/
@凌驾
创建时的公共void(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
文件images=Environment.getExternalStorageDirectory();
imagelist=images.listFiles(新文件名筛选器(){
公共布尔接受(文件目录,字符串名称)
{
返回((name.endsWith(.pdf));
}
});
pdflist=新字符串[imagelist.length];
对于(int i=0;i 0&&imagelist[(int)id].isFile()){
意图=新意图();
intent.setAction(intent.ACTION\u视图);
Uri=Uri.fromFile(imagelist[(int)id].getAbsoluteFile());
setDataAndType(uri,“应用程序/pdf”);
星触觉(意向);
}
}
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView android:id="@+android:id/list" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:drawSelectorOnTop="false" />
</LinearLayout>
公共类Testopen扩展活动{
私人名单;
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File File=新文件(Environment.getExternalStorageDirectory()
+文件分隔符
+“mymusic”//文件夹名称
);
如果(!file.exists()){
mkdirs()文件;
}
ListView lv=(ListView)findViewById(R.id.listview1);
list=getSD();
lv.setAdapter((ListAdapter)新的ArrayAdapter(这个,android.R.layout.simple_list_item_1,list));
Log.d(“Log”,“FIRE!!”);
lv.setOnItemClickListener(新的OnItemClickListener(){
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//单击后,显示带有文本视图文本的祝酒词
Toast.makeText(Testopen.this,“单击一项”,Toast.LENGTH_LONG.show();
Intent Intent=新的Intent(Testopen.this、OpenFileActivity.class);
星触觉(意向);
}
});
}
//从SD卡读取
私有列表getSD(){
列表项=新建ArrayList();
文件f=新文件(“/sdcard/download”);
File[]files=f.listFiles();
对于(int i=0;i
公共类Testopen扩展活动{
私人名单;
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
File File=新文件(Environment.getExternalStorageDirectory()
+文件分隔符
+“mymusic”//文件夹名称
);
如果(!file.exists()){
mkdirs()文件;
}
ListView lv=(ListView)findViewById(R.id.listview1);
list=getSD();
lv.setAdapter((ListAdapter)新的ArrayAdapter(这个,android.R.layout.simple_list_item_1,list));
Log.d(“Log”,“FIRE!!”);
lv.setOnItemClickListener(新的OnItemClickListener(){
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
//单击后,显示带有文本视图文本的祝酒词
Toast.makeText(Testopen.this,“单击一项”,Toast.LENGTH_LONG.show();
Intent Intent=新的Intent(Testopen.this、OpenFileActivity.class);
星触觉(意向);
}
});
}
//从SD卡读取
私有列表getSD(){
列表项=新建ArrayList();
文件f=新文件(“/sdcard/download”);
File[]files=f.listFiles();
对于(int i=0;i