Android的DialogFragment的基本使用

1.API不小于11；

2.使用方法：

（1）新建对话框的类必须继承于DialogFragment：

　　对话框中有一按钮，点击按钮后关闭对话框。

　　代码如下：

 1 @SuppressLint("ValidFragment")
 2 public class MatchDialog extends DialogFragment {
 3
 4     public MatchDialog() {
 5     }
 6
 7     Dialog mDialog;
 8     MatchTextView matchTextView;
 9     MatchButton mMatchButton;
10
11     @Override
12     public Dialog onCreateDialog(Bundle savedInstanceState) {
13         if (mDialog == null) {
14             mDialog = new Dialog(getActivity(), R.style.cart_dialog);
15             mDialog.setContentView(R.layout.dialog_match);
16             mDialog.setCanceledOnTouchOutside(true);
17             mDialog.getWindow().setGravity(Gravity.CENTER);
18             View view = mDialog.getWindow().getDecorView();
19             matchTextView = (MatchTextView) view.findViewById(R.id.mTextView);
20             matchTextView.setMatchOutListener(new MatchView.MatchOutListener() {
21                 @Override
22                 public void onBegin() {
23
24                 }
25
26                 @Override
27                 public void onProgressUpdate(float progress) {
28                 }
29
30                 @Override
31                 public void onFinish() {
32                     MatchDialog.super.onStop();
33                 }
34             });
35
36             mMatchButton = (MatchButton) view.findViewById(R.id.mButton);
37             mMatchButton.setOnClickListener(new View.OnClickListener() {
38                 @Override
39                 public void onClick(View v) {
40                     mMatchButton.hide();
41                     matchTextView.hide();
42                 }
43             });
44         }
45         return mDialog;
46     }
47 }

（2）调用对话框的Activity要继承FragmentActivity：

 1 public class MainActivity extends FragmentActivity {
 2
 3     private MatchTextView mMatchTextView;
 4     private SeekBar mSeekBar;
 5
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.activity_main);
10
11         mMatchTextView = (MatchTextView) findViewById(R.id.mMatchTextView);
12         mSeekBar = (SeekBar) findViewById(R.id.mSeekBar);
13         mSeekBar.setProgress(100);
14         mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
15             @Override
16             public void onProgressChanged(SeekBar seekBar, int progress,
17                     boolean fromUser) {
18                 mMatchTextView.setProgress(progress * 1f / 100);
19             }
20
21             @Override
22             public void onStartTrackingTouch(SeekBar seekBar) {
23
24             }
25
26             @Override
27             public void onStopTrackingTouch(SeekBar seekBar) {
28
29             }
30         });
31
32         findViewById(R.id.mButton).setOnClickListener(
33                 new View.OnClickListener() {
34                     @Override
35                     public void onClick(View v) {
36                         showMatchDialog();
37                     }
38                 });
39     }
40
41     protected void showMatchDialog() {
42          MatchDialog matchDialog = new MatchDialog();
43          getSupportFragmentManager().beginTransaction().add(matchDialog, "matchDialog").commit();
44     }
45
46 }