我正在编程一点点android，我在添加和调用联系人方面遇到了问题。
我的想法是添加两个联系人，当按下呼叫按钮时，用户可以决定他要拨打哪一个..我的两个问题是，在我的AVD上，代码正常工作，直到我必须打电话给某人。所以我可以选择2个联系人，这些联系人已经安全...在我的朋友的电话上我甚至无法选择联系人...程序只是说：“应用程序Contacts_SPrefs停止工作”...
我认为我的代码中存在问题..但我不知道它在哪里以及我如何解决它，因为在我以前的版本中代码有效...
因此，在应用程序的这一部分中，您可以添加2个联系人并选择按钮调用，这将打开下面描述的另一个意图
主要活动
package com.example.contact_sprefs;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.ContactsContract;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
private String contact;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// this opens the activity. note the Intent.ACTION_GET_CONTENT
// and the intent.setType
((Button)findViewById(R.id.bro1)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
// user BoD suggests using Intent.ACTION_PICK instead of .ACTION_GET_CONTENT to avoid the chooser
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// BoD con't: CONTENT_TYPE instead of CONTENT_ITEM_TYPE
intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE);
//-------- > this thing here opens the contacts view < ------
//later its waiting until the user clicks on a number of his contacts
contact = "Brah1";
startActivityForResult(intent, 1);
}
});
((Button)findViewById(R.id.bro2)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE);
contact = "Brah2";
startActivityForResult(intent, 1);
}
});
((Button)findViewById(R.id.call)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), OpenMenu.class);
startActivity(intent);
}
});
}
//doing random sh*t which i dont know whaat happens
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data != null) {
//after he clicked a number its getting to this point
//in the uri it saves some number and all this things where the contact is
//so this is for the location
Uri uri = data.getData();
if (uri != null) {
//get more data
//in this cursor all the values of the contacts are going to be safed
//c is for the contact
Cursor c = null;
try {
//here all datas from the contact are going to be safed in c
c = getContentResolver().query(uri, new String[]{
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.TYPE },
null, null, null);
if (c != null && c.moveToFirst()) {
//c is the phone number in very special code types and stuff like that
//in c is everything from the contact saved
//now c is going to be converted into a string -> everything that stays is the phone number
String number = c.getString(0);
//get the type... somehow
int type = c.getInt(1);
showSelectedNumber(type, number);
save(contact, number);
}
} finally {
if (c != null) {
c.close();
}
}
}
}
}
public void showSelectedNumber(int type, String number) {
Toast.makeText(this, "Saved Nr : " + number, Toast.LENGTH_LONG).show();
}
public void save(String type, String number) {
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(this);
Editor edit = sp.edit();
edit.putString(type, number);
edit.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
所以...你可以看到..我真的不太了解Intent及其规格的主题..无论如何......继承人应用程序的第二部分，其中call-command是..和这个命令做任务...
OpenMenu
package com.example.contact_sprefs;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class OpenMenu extends Activity {
private String nr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.open_menu);
((Button)findViewById(R.id.bro1)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
nr = load("Brah1", nr);
String uri = "tel:" + nr.trim() ;
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse(uri));
startActivity(intent);
}
});
((Button)findViewById(R.id.bro2)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
nr = load("Brah2", nr);
String uri = "tel:" + nr.trim() ;
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse(uri));
startActivity(intent);
}
});
}
public void showSelectedNumber(String number) {
Toast.makeText(this, "Took Nr : " + number, Toast.LENGTH_LONG).show();
}
public String load(String brahNr, String number) {
String sharedNumber;
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(this);
sharedNumber = sp.getString(brahNr, number);
return sharedNumber;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.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.get
ItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
....嗯......这是很多代码（对我而言）..我感谢所有帮助我的人：）
后来编辑
我忘了权限......所以这也需要
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.CALL_PHONE" />
VZ