android面试题pdf,如何在Android中呈现PDF

某些手机​​(例如Nexus One)预先安装了Quickoffice版本，因此将文件保存到SD卡后，发送适当的Intent可能很容易。

public class OpenPdf extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button button = (Button) findViewById(R.id.OpenPdfButton);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

File file = new File("/sdcard/example.pdf");

if (file.exists()) {

Uri path = Uri.fromFile(file);

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(path, "application/pdf");

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

try {

startActivity(intent);

}

catch (ActivityNotFoundException e) {

Toast.makeText(OpenPdf.this,

"No Application Available to View PDF",

Toast.LENGTH_SHORT).show();

}

}

}

});

}

}