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Android DialogFragment（2）
附录文章1简单介绍了如何实现一个DialogFragment，本文再介绍一种简单的方法：直接重写DialogFragment的onCreateDialog返回一个AlertDialog实现对话框。本文的例子和附录文章1不同的地方：不在依赖onCreateView。
代码运行逻辑简述：功能简单，当点击FloatingActionButton 后弹出一个自定义的DialogFragment，该DialogFragment重写了onCreateDialog，返回一个自定义的AlertDialog。
[java] view plain copy package zhangphil.app; import android.app.AlertDialog; import android.app.Dialog; import android.app.DialogFragment; import android.content.DialogInterface; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { MyDialogFragment dialog = new MyDialogFragment(); dialog.show(getFragmentManager(), "zhangphil"); } }); } public static class MyDialogFragment extends DialogFragment { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); LayoutInflater inflater = getActivity().getLayoutInflater(); View view = inflater.inflate(android.R.layout.simple_list_item_1, null); TextView text = (TextView) view.findViewById(android.R.id.text1); text.setText("zhang phil @ csdn"); builder.setView(view) .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }).setNegativeButton("取消", null); return builder.create(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
代码运行结果如图：
