在Android中顯示觸摸滾動中的PDF

Question

我的Android移動版SD卡中有多個分頁PDF。我想從我的應用程序中查看它，但不知道如何顯示它。

我可以使用任何jar在屏幕上顯示它。

Answer 1

將PDF的查看交給另一個應用程序（如Adobe Reader）可能是最佳選擇。

使用一個意圖：

Intent i = new Intent(Intent.ACTION_VIEW); 
File pdf = new File(FILE_LOCATION); 
i.setDataAndType(Uri.fromFile(pdf), "application/pdf"); 
startActivity(i); 

我們還應該考慮如果用戶沒有使用PDF閱讀器的情景：

Intent i = new Intent(Intent.ACTION_VIEW); 
File pdf = new File(FILE_LOCATION); 
i.setDataAndType(Uri.fromFile(pdf), "application/pdf"); 

List<ResolveInfo> list = getPackageManager().queryIntentActivities(i, 
       PackageManager.MATCH_DEFAULT_ONLY); 
if(!list.isEmpty()){ 
    startActivity(i); 
}else{ 
    Toast.makeText(this, "A PDF reader is required to open this.", Toast.LENGTH_LONG).show(); 
} 

Answer 2

First u install the acrobat reader in ur emulator and the u view ur pdf file in emulator. 
Download acrobat reader apk and install in emulator using this command from command line. 
1. Go to start and open run. 
2. type cmd and type "adb -e install FilePath" press enter. 
Then u go to ur application and write this code for viewing pdf in acrobat reader. 

Intent i = new Intent(Intent.ACTION_VIEW); 
File pdf = new File(<File name whit full path>); 
i.setDataAndType(Uri.fromFile(pdf), "application/pdf"); 
startActivity(i);