如何正确使用电子邮件意图？[复制]

Question

我试图让我的应用程序向电子邮件发送一个新密码，但它会打开一个页面并给出消息“没有应用程序可以执行此操作”，标题为“发送电子邮件”（我知道我有），为什么？我想要一个新密码的想法，但首先我想向编辑文本中键入的电子邮件发送任何内容以进行测试。我尝试过在真实设备上运行它。

public class Glemtpassword extends AppCompatActivity implements View.OnClickListener{

Button nypassword;
EditText email;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_glemtpassword);
    nypassword = (Button) findViewById(R.id.nypassword);
    nypassword.setOnClickListener(this);
    email = (EditText) findViewById(R.id.email);
}

 @Override
public void onClick(View view) {
    if (view == nypassword){
        sendEmail();
    }
}

protected void sendEmail() {
    Log.i("Send email", "");
    Intent emailIntent = new Intent(Intent.ACTION_SEND);

    emailIntent.putExtra(Intent.EXTRA_EMAIL, String.valueOf(email));

    try {
        startActivity(Intent.createChooser(emailIntent, "Send mail..."));
        finish();
        Log.i("Nyt password er sendt til din mail...", "");
    }
    catch (android.content.ActivityNotFoundException ex) {
        Toast.makeText(Glemtpassword.this, "Ingen email klient", Toast.LENGTH_SHORT).show();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.Forside) {
        Intent intent = new Intent(this, Forside.class);
        startActivity(intent);
    }
    else if (id == R.id.Logind){
        Intent intent = new Intent(this, LogInd.class);
        startActivity(intent);
    }
    else if (id==R.id.Opretbruger) {
        Intent intent = new Intent(this, OpretBruger.class);
        startActivity(intent);
    }
    return true;
 }
}

编辑：

public class Glemtpassword extends AppCompatActivity implements View.OnClickListener{

Button nypassword;
EditText email;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_glemtpassword);
    nypassword = (Button) findViewById(R.id.nypassword);
    nypassword.setOnClickListener(this);
    email = (EditText) findViewById(R.id.email);
}

 @Override
public void onClick(View view) {
    if (view == nypassword){
        sendEmail();
    }
}

protected void sendEmail() {
    Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
            "mailto", email.getText().toString(), null));
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
    emailIntent.putExtra(Intent.EXTRA_TEXT, "Body");
    startActivity(Intent.createChooser(emailIntent, "Send email..."));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.Forside) {
        Intent intent = new Intent(this, Forside.class);
        startActivity(intent);
    }
    else if (id == R.id.Logind){
        Intent intent = new Intent(this, LogInd.class);
        startActivity(intent);
    }
    else if (id==R.id.Opretbruger) {
        Intent intent = new Intent(this, OpretBruger.class);
        startActivity(intent);
    }
    return true;
 }
}

Answer 1

根据这个答案

解决办法应该是：

Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
        "mailto","[e-mail]", null)); 
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
emailIntent.putExtra(Intent.EXTRA_TEXT, "Body"); 
startActivity(Intent.createChooser(emailIntent, "Send email..."));

或者如Android文档中所述，您可以使用：

Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:")); // only email apps should handle this
intent.putExtra(Intent.EXTRA_EMAIL, addresses);
intent.putExtra(Intent.EXTRA_SUBJECT, subject);

Answer 2

您没有设置MIME类型，也没有提供任何内容。调用putExtra（）为Intent上的EXTRA_TEXT设置一个值，以及您希望出现在电子邮件正文中的任何内容。然后，在Intent上调用setType（）以指示您放置在EXTRA_TEXT中的数据的MIME类型。