doc什么格式android能打开软件,PDF、Doc与Dwg格式的文件怎么在Android应用中打开

PDF、Doc与Dwg格式的文件怎么在Android 应用中打开

发布时间：2020-12-03 14:45:57

来源：亿速云

阅读：95

作者：Leah

本篇文章为大家展示了PDF、Doc与Dwg格式的文件怎么在Android 应用中打开，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

代码:

这是一个单独的类 首先接收intent传过来的url我是用url的后14位作为存储本地的文件名(这里根据自己服务器的文件命名规则而定) 拿到文件路径之后 判断本地是否有此文件 有则打开没有则从服务器上下载并打开 ;

Intent intent = act.getIntent();

final String Strname = intent.getStringExtra("docurl");

//截取最后14位 作为文件名

String s = Strname.substring(Strname.length()-14);

//文件存储

file1 = new File(Environment.getExternalStorageDirectory(), getFileName(s));

new Thread() {

public void run() {

File file = new File( file1.getAbsolutePath());

//判断是否有此文件

if (file.exists()) {

//有缓存文件,拿到路径 直接打开

Message msg = Message.obtain();

msg.obj = haha;

msg.what = DOWNLOAD_SUCCESS;

handler.sendMessage(msg);

mProgressDialog.dismiss();

return;

}

// 本地没有此文件 则从网上下载打开

File downloadfile = downLoad(Strname, file1.getAbsolutePath(), mProgressDialog);

// Log.i("Log",file1.getAbsolutePath());

Message msg = Message.obtain();

if (downloadfile != null) {

// 下载成功,安装....

msg.obj = downloadfile;

msg.what = DOWNLOAD_SUCCESS;

} else {

// 提示用户下载失败.

msg.what = DOWNLOAD_ERROR;

}

handler.sendMessage(msg);

mProgressDialog.dismiss();

};

}.start();

下载文档代码;

传入需要下载的文档的url 和存入内存的路径和dialog

public static File downLoad(String serverpath, String savedfilepath, ProgressDialog pd) {

try {

URL url = new URL(serverpath);

HttpURLConnection cOnn= (HttpURLConnection) url.openConnection();

conn.setConnectTimeout(5000);

if (conn.getResponseCode() == 200) {

int max = conn.getContentLength();

pd.setMax(max);

InputStream is = conn.getInputStream();

File file = new File(savedfilepath);

FileOutputStream fos = new FileOutputStream(file);

int len = 0;

byte[] buffer = new byte[1024];

int total = 0;

while ((len = is.read(buffer)) != -1) {

fos.write(buffer, 0, len);

total += len;

pd.setProgress(total);

}

fos.flush();

fos.close();

is.close();

return file;

} else {

return null;

}

} catch (Exception e) {

e.printStackTrace();

}

}

打开文件选择器

Handler handler = new Handler() {

public void handleMessage(android.os.Message msg) {

switch (msg.what) {

case DOWNLOAD_SUCCESS:

File file = (File) msg.obj;

Intent intent = new Intent("android.intent.action.VIEW");

intent.addCategory("android.intent.category.DEFAULT");

intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);

intent.setDataAndType (Uri.fromFile(file), "application/pdf");

// startActivity(intent);

startActivity(Intent.createChooser(intent, "标题"));

/**

* 弹出选择框之后 把本activity销毁

*/

finish();

break;

case DOWNLOAD_ERROR:

Util.showToast(act,"文件加载失败");

break;

}

}

};

整体代码

public class list_item_doc extends BaseActivity {

private ProgressDialog mProgressDialog;

// 下载失败

public static final int DOWNLOAD_ERROR = 2;

// 下载成功

public static final int DOWNLOAD_SUCCESS = 1;

private File file1;

@Override

protected void onCreate(Bundle arg0) {

// TODO Auto-generated method stub

super.onCreate(arg0);

initView();

}

private void initView() {

// TODO Auto-generated method stub

Intent intent = act.getIntent();

final String Strname = intent.getStringExtra("url");

mProgressDialog = new ProgressDialog(act);

mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

mProgressDialog.setCancelable(false);

mProgressDialog.show();

//截取最后14位 作为文件名

String s = Strname.substring(Strname.length()-14);

//文件存储

file1 = new File(Environment.getExternalStorageDirectory(), getFileName(s));

new Thread() {

public void run() {

File haha = new File( file1.getAbsolutePath());

//判断是否有此文件

if (haha.exists()) {

//有缓存文件,拿到路径 直接打开

Message msg = Message.obtain();

msg.obj = haha;

msg.what = DOWNLOAD_SUCCESS;

handler.sendMessage(msg);

mProgressDialog.dismiss();

return;

}

// 本地没有此文件 则从网上下载打开

File downloadfile = downLoad(Strname, file1.getAbsolutePath(), mProgressDialog);

// Log.i("Log",file1.getAbsolutePath());

Message msg = Message.obtain();

if (downloadfile != null) {

// 下载成功,安装....

msg.obj = downloadfile;

msg.what = DOWNLOAD_SUCCESS;

} else {

// 提示用户下载失败.

msg.what = DOWNLOAD_ERROR;

}

handler.sendMessage(msg);

mProgressDialog.dismiss();

};

}.start();

}

/**

* 下载完成后 直接打开文件

*/

Handler handler = new Handler() {

public void handleMessage(android.os.Message msg) {

switch (msg.what) {

case DOWNLOAD_SUCCESS:

File file = (File) msg.obj;

Intent intent = new Intent("android.intent.action.VIEW");

intent.addCategory("android.intent.category.DEFAULT");

intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);

intent.setDataAndType (Uri.fromFile(file), "application/pdf");

// startActivity(intent);

startActivity(Intent.createChooser(intent, "标题"));

/**

* 弹出选择框 把本activity销毁

*/

finish();

break;

case DOWNLOAD_ERROR:

Util.showToast(act,"文件加载失败");

break;

}

}

};

/**

*

*/

/**

* 传入文件 url 文件路径 和 弹出的dialog 进行 下载文档

*/

public static File downLoad(String serverpath, String savedfilepath, ProgressDialog pd) {

try {

URL url = new URL(serverpath);

HttpURLConnection cOnn= (HttpURLConnection) url.openConnection();

conn.setConnectTimeout(5000);

if (conn.getResponseCode() == 200) {

int max = conn.getContentLength();

pd.setMax(max);

InputStream is = conn.getInputStream();

File file = new File(savedfilepath);

FileOutputStream fos = new FileOutputStream(file);

int len = 0;

byte[] buffer = new byte[1024];

int total = 0;

while ((len = is.read(buffer)) != -1) {

fos.write(buffer, 0, len);

total += len;

pd.setProgress(total);

}

fos.flush();

fos.close();

is.close();

return file;

} else {

return null;

}

} catch (Exception e) {

e.printStackTrace();

return null;

}

}

public static String getFileName(String serverurl) {

return serverurl.substring(serverurl.lastIndexOf("/") + 1);

}

}

上述内容就是PDF、Doc与Dwg格式的文件怎么在Android 应用中打开，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注亿速云行业资讯频道。